Universal H Series Troubleshooting Guide
Page 4
Integrated Control Board Layout (ICB) C B A J 4 D I E A Remote Control: 24VAC (E1) F B Flame Sensor (E4) C Temperature Sensor (E2) G D Display Output: 24VAC (E7) E 3A Fuse (F1) F Low Voltage R & C: 24VAC (E12, E13) G Gas Valve & Safety Switches: 24VAC (E11) H H High Voltage: 120VAC (E10) I Blower/Inducer (E6) J Ignitor (E3)
Integrated Control Board Layout (ICB) C B A J 4 D I E A Remote Control: 24VAC (E1) F B Flame Sensor (E4) C Temperature Sensor (E2) G D Display Output: 24VAC (E7) E 3A Fuse (F1) F Low Voltage R & C: 24VAC (E12, E13) G Gas Valve & Safety Switches: 24VAC (E11) H H High Voltage: 120VAC (E10) I Blower/Inducer (E6) J Ignitor (E3)
Universal H Series Troubleshooting Guide
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Blower starts pre-purge cycle as the ignitor heats up (20 Sec). 3. Gas valve opens and monitors flame sense. When set temp to light operations. 7 UHS Sequence of 4 sec trial. At proper ignitor temp, a 4 second trial begins. If the ...: Normal The control continually compares the set temp is reached, the control ends the call for heat. 5. The blower will operate for one second. The gas valve is de-energized, and the flame is 1º below the set point the following sequence starts: 1. The blower will turn off for a 30 second post...
Blower starts pre-purge cycle as the ignitor heats up (20 Sec). 3. Gas valve opens and monitors flame sense. When set temp to light operations. 7 UHS Sequence of 4 sec trial. At proper ignitor temp, a 4 second trial begins. If the ...: Normal The control continually compares the set temp is reached, the control ends the call for heat. 5. The blower will operate for one second. The gas valve is de-energized, and the flame is 1º below the set point the following sequence starts: 1. The blower will turn off for a 30 second post...
Universal H Series Troubleshooting Guide
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Starts over at #2 of any type there may be a 5-10 sec delay for certain situations. 8 Waits 60 minutes then retries 3 more times. 5. NOTE: When making keypad entries of heating mode sequence. 3. Retries 3 times until demand for 30 second, blower post purge). 2. Gas valve de-energizes (for heat is stopped. Will continue to Light If trial fails: 1. UHS Sequence of Operation: Failure to retry every 60 minutes, until lockout (IF code). 4.
Starts over at #2 of any type there may be a 5-10 sec delay for certain situations. 8 Waits 60 minutes then retries 3 more times. 5. NOTE: When making keypad entries of heating mode sequence. 3. Retries 3 times until demand for 30 second, blower post purge). 2. Gas valve de-energizes (for heat is stopped. Will continue to Light If trial fails: 1. UHS Sequence of Operation: Failure to retry every 60 minutes, until lockout (IF code). 4.
Universal H Series Troubleshooting Guide
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Step 1 Measure the outlet manifold pressure (valve on Page 17. NOTE: Please refer to Installation Manual for propane. Step 2 The static & load values should be within the levels listed on the data plate, example on / energized), as shown below. Manifold reading should be between 1.8"- 2.0" w.c for natural Gas or 6.8"- 7.0" w.c for proper gas line sizing. 16 How To: Test/Adjust Gas Pressure Measure the inlet static pressure (valve off) & load pressure (valve on / energized).
Step 1 Measure the outlet manifold pressure (valve on Page 17. NOTE: Please refer to Installation Manual for propane. Step 2 The static & load values should be within the levels listed on the data plate, example on / energized), as shown below. Manifold reading should be between 1.8"- 2.0" w.c for natural Gas or 6.8"- 7.0" w.c for proper gas line sizing. 16 How To: Test/Adjust Gas Pressure Measure the inlet static pressure (valve off) & load pressure (valve on / energized).
Universal H Series Troubleshooting Guide
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... contact installer. 17 IF it does, continue to reduce pressure). *NOTE: Before any adjustment occurs, verify inlet gas pressure meets the requirement set forth by rotating valve clockwise, (counter clockwise to step 4. Verify heater specifications off the heater plate (bottom front inside heater) Step ...3 Step 4 *Adjust the manifold pressure (at the gas valve) IF inlet pressures are correct AND the manifold pressure is within range, then your manifold pressure should be correct per factory settings....
... contact installer. 17 IF it does, continue to reduce pressure). *NOTE: Before any adjustment occurs, verify inlet gas pressure meets the requirement set forth by rotating valve clockwise, (counter clockwise to step 4. Verify heater specifications off the heater plate (bottom front inside heater) Step ...3 Step 4 *Adjust the manifold pressure (at the gas valve) IF inlet pressures are correct AND the manifold pressure is within range, then your manifold pressure should be correct per factory settings....
Universal H Series Troubleshooting Guide
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... Blower Vacuum Switch open Bad board or secondary high voltage fault Communication Error Between Control Module and Display Interface Assembly Bad board Flame present with Gas Valve not energized.
... Blower Vacuum Switch open Bad board or secondary high voltage fault Communication Error Between Control Module and Display Interface Assembly Bad board Flame present with Gas Valve not energized.
Universal H Series Troubleshooting Guide
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... (temperature sensor) IDXL2SNT1930 IDXL2SNT1930 Combustion Blower Tube Kit IDXL2DB1930 IDXL2DB1930 Prior 07/16-Display Board (only) FDXLEGL1931 FDXLEGL1931 Exhaust Gas Limit Switch FDXLBKP1930 FDXLBKP1930 Prior 07/16-Bezel/Keypad Assy. FDXLBCP1150 Kit-Bezel Control Panel 150 FDXLBCP1200 Kit-Bezel Control Panel... Fuse Kit FDXLWPS1930 FDXLWPS1930 Water Pressure Switch FDXLBVS1930 FDXLBVS1930 Blower Vacuum Switch FDXLBRN1930 FDXLBRN1930 Burner Kit *FDXLGSV0001 FDXLGSV1500N Gas Valve (Natural Gas) FDXLGSV002 FDXLGSV1500P Gas Valve (Propane) FDXLVPS1930 FDXLVPS1930 Vent Pressure Switch
... (temperature sensor) IDXL2SNT1930 IDXL2SNT1930 Combustion Blower Tube Kit IDXL2DB1930 IDXL2DB1930 Prior 07/16-Display Board (only) FDXLEGL1931 FDXLEGL1931 Exhaust Gas Limit Switch FDXLBKP1930 FDXLBKP1930 Prior 07/16-Bezel/Keypad Assy. FDXLBCP1150 Kit-Bezel Control Panel 150 FDXLBCP1200 Kit-Bezel Control Panel... Fuse Kit FDXLWPS1930 FDXLWPS1930 Water Pressure Switch FDXLBVS1930 FDXLBVS1930 Blower Vacuum Switch FDXLBRN1930 FDXLBRN1930 Burner Kit *FDXLGSV0001 FDXLGSV1500N Gas Valve (Natural Gas) FDXLGSV002 FDXLGSV1500P Gas Valve (Propane) FDXLVPS1930 FDXLVPS1930 Vent Pressure Switch
Universal H Series Troubleshooting Guide
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...FDXLWHA1930 OR pressure switch if damaged: FDXLWPS1930 Replace wire harness: FDXLWHA1930 OR vacuum switch if damaged: FDXLBVS1930 Replace wire harness: FDXLWHA1930 OR Replace gas valve: Please refer to (pg. 20) NO Is water pressure switch wiring damaged, pinched, or worn? NO Is blower vacuum switch wiring ...damaged, pinched, or worn? NO Is gas valve wiring damaged, pinched, or worn? NO YES Inspect ICB wiring, any wires showing continuity? Open FC3 &/or F1 Fuse Open FC3 &/or...
...FDXLWHA1930 OR pressure switch if damaged: FDXLWPS1930 Replace wire harness: FDXLWHA1930 OR vacuum switch if damaged: FDXLBVS1930 Replace wire harness: FDXLWHA1930 OR Replace gas valve: Please refer to (pg. 20) NO Is water pressure switch wiring damaged, pinched, or worn? NO Is blower vacuum switch wiring ...damaged, pinched, or worn? NO Is gas valve wiring damaged, pinched, or worn? NO YES Inspect ICB wiring, any wires showing continuity? Open FC3 &/or F1 Fuse Open FC3 &/or...
Universal H Series Troubleshooting Guide
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... replace the wire harness (pg. 20). IF OK, go to step 3B. IF OK, go to step 3C. IF OK, go to step 3E. Inspect gas valve wiring Step 3D With power off, inspect the blower vacuum switch wiring for damage. IF damaged, replace the wire harness (pg. 20). IF OK, go...step 3D. 30 With power off , inspect the water pressure switch wiring for damage. Inspect blower vacuum switch Step 3C With power off , inspect the gas valve wiring for damage. 3. Open FC3 &/or F1 Fuse Inspect connections/high limits Step 3A Inspect water pressure switch Step 3B Power down and inspect all...
... replace the wire harness (pg. 20). IF OK, go to step 3B. IF OK, go to step 3C. IF OK, go to step 3E. Inspect gas valve wiring Step 3D With power off, inspect the blower vacuum switch wiring for damage. IF damaged, replace the wire harness (pg. 20). IF OK, go...step 3D. 30 With power off , inspect the water pressure switch wiring for damage. Inspect blower vacuum switch Step 3C With power off , inspect the gas valve wiring for damage. 3. Open FC3 &/or F1 Fuse Inspect connections/high limits Step 3A Inspect water pressure switch Step 3B Power down and inspect all...
Universal H Series Troubleshooting Guide
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...and the problem still exists, replace the ICB (pg. 20) 31 Open FC3 &/or F1 Fuse (cont.) When testing the gas valve, if continuity appears between any terminal shows continuity, replace the gas valve (pg. 20). 3. IF OK, go to ground. IF any wires and ground, then this implies a short has occurred and... the gas valve will need to be replaced (refer to pg. 20 for part number). Inspect ICB wiring. Verify gas valve is damaged, replace the wire harness with a new wire harness kit (pg. 20). IF wiring is...
...and the problem still exists, replace the ICB (pg. 20) 31 Open FC3 &/or F1 Fuse (cont.) When testing the gas valve, if continuity appears between any terminal shows continuity, replace the gas valve (pg. 20). 3. IF OK, go to ground. IF any wires and ground, then this implies a short has occurred and... the gas valve will need to be replaced (refer to pg. 20 for part number). Inspect ICB wiring. Verify gas valve is damaged, replace the wire harness with a new wire harness kit (pg. 20). IF wiring is...
Universal H Series Troubleshooting Guide
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NO Did the "HF" YES code reappear? NO Test for heat YES Is 24VAC present? 10. NO Toggle the mode button and call for 24VAC off the gas valve Replace ICB: FDXLICB1930 Do you have YES manifold gas pressure? NO NO Verify error code & jump to section that best describes error Replace gas valve: Please refer to (pg. 20) 44 Reduce the temperature set point until heater stop firing Problem solved Did the "HF" YES code reappear? Service LED ON: "HF" Code "HF" Code Power cycle the heater at the breaker Does heater YES fire?
NO Did the "HF" YES code reappear? NO Test for heat YES Is 24VAC present? 10. NO Toggle the mode button and call for 24VAC off the gas valve Replace ICB: FDXLICB1930 Do you have YES manifold gas pressure? NO NO Verify error code & jump to section that best describes error Replace gas valve: Please refer to (pg. 20) 44 Reduce the temperature set point until heater stop firing Problem solved Did the "HF" YES code reappear? Service LED ON: "HF" Code "HF" Code Power cycle the heater at the breaker Does heater YES fire?
Universal H Series Troubleshooting Guide
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IF 24VAC is still present at gas valve AND manifold pressure is not present, gas valve is off, the control will continuously run blower for heat and test gas valve Step 10B ON Power cycle the heater, in an attempt to clear an erroneous "HF" code. Power cycle heater Step 10A OFF Call for 5 ... drop the temperature to be replaced. Service LED ON: "HF" Code (cont.) "HF" (heat or flame sensed) will occur if flame is sensed when the gas valve is defective and needs to suspend heating. The blower will go to toggle the heater and call for heat. Otherwise, replace the ICB (pg. 20...
IF 24VAC is still present at gas valve AND manifold pressure is not present, gas valve is off, the control will continuously run blower for heat and test gas valve Step 10B ON Power cycle the heater, in an attempt to clear an erroneous "HF" code. Power cycle heater Step 10A OFF Call for 5 ... drop the temperature to be replaced. Service LED ON: "HF" Code (cont.) "HF" (heat or flame sensed) will occur if flame is sensed when the gas valve is defective and needs to suspend heating. The blower will go to toggle the heater and call for heat. Otherwise, replace the ICB (pg. 20...
Universal H Series Troubleshooting Guide
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..., verify flame Inspect gas YES Is heater's gas YES sensor & gas valve valve in heater valve ON? YES Is there manifold gas pressure? NO YES Is voltage correct? Service LED ON: "IF" Code "IF" Code Is main gas supply ON? NO Turn on main gas supply & retest Go to gas valve during call for heat... pressure correct? NO NO Correct inlet gas pressure Adjust manifold gas pressure Replace gas valve: Replace ICB: 52 Please refer to (pg. 20) FDXLICB1930 ...
..., verify flame Inspect gas YES Is heater's gas YES sensor & gas valve valve in heater valve ON? YES Is there manifold gas pressure? NO YES Is voltage correct? Service LED ON: "IF" Code "IF" Code Is main gas supply ON? NO Turn on main gas supply & retest Go to gas valve during call for heat... pressure correct? NO NO Correct inlet gas pressure Adjust manifold gas pressure Replace gas valve: Replace ICB: 52 Please refer to (pg. 20) FDXLICB1930 ...
Universal H Series Troubleshooting Guide
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12. NO Contact tech support: (908) 355-7995 53 Service LED ON: "IF" Code Section B (continued from previous page) Is correct flame YES sensor installed OR damaged? NO Inspect and/or clean burner tubes & orifices Replace with new burner kit: FDXLBRN1930 OR Gas Valve (includes orifices): (pg. 20) YES Are burner tubes & orifices damaged? NO Replace flame sensor: IDXLFLS1930 Check for damaged OR wrong blower air inlet plate NO Is plate YES damaged/ wrong?
12. NO Contact tech support: (908) 355-7995 53 Service LED ON: "IF" Code Section B (continued from previous page) Is correct flame YES sensor installed OR damaged? NO Inspect and/or clean burner tubes & orifices Replace with new burner kit: FDXLBRN1930 OR Gas Valve (includes orifices): (pg. 20) YES Are burner tubes & orifices damaged? NO Replace flame sensor: IDXLFLS1930 Check for damaged OR wrong blower air inlet plate NO Is plate YES damaged/ wrong?
Universal H Series Troubleshooting Guide
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..., load, and manifold pressures are both securely fastened to Step 12E. 12. IF correct, go to the ICB. Flame sensor & gas valve Step 12C Verify that the gas valve, inside the heater, is in the "ON" position. IF ON, go to Step 12F. IF NOT, go to step 12C. Service LED ON: "IF" Code... Inspect main gas supply Step 12A Verify gas valve is ON Step 12B IF "Ignition Failure", Ensure main gas supply is in the ON position...
..., load, and manifold pressures are both securely fastened to Step 12E. 12. IF correct, go to the ICB. Flame sensor & gas valve Step 12C Verify that the gas valve, inside the heater, is in the "ON" position. IF ON, go to Step 12F. IF NOT, go to step 12C. Service LED ON: "IF" Code... Inspect main gas supply Step 12A Verify gas valve is ON Step 12B IF "Ignition Failure", Ensure main gas supply is in the ON position...
Universal H Series Troubleshooting Guide
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IF present & no pressure (manometer attached), replace valve. IF OK, go to step 12H. 55 Inspect Gas Orifices & Burners for damaged/wrong blower air inlet plate. IF NOT damaged, contact tech support (908) 355-7995. Otherwise, replace ICB (pg. 20). IF ...20). Inspect orifices & burner tubes Step 12H Check for blockage. Service LED ON: "IF" Code (cont.) Voltage/pressure off gas valve Step 12E Verify correct flame sensor Step 12F Verify 22-28VAC off gas valve during ignition trial. Verify blower air inlet plate Step 12G Verify that the installed flame sensor is damaged, replace...
IF present & no pressure (manometer attached), replace valve. IF OK, go to step 12H. 55 Inspect Gas Orifices & Burners for damaged/wrong blower air inlet plate. IF NOT damaged, contact tech support (908) 355-7995. Otherwise, replace ICB (pg. 20). IF ...20). Inspect orifices & burner tubes Step 12H Check for blockage. Service LED ON: "IF" Code (cont.) Voltage/pressure off gas valve Step 12E Verify correct flame sensor Step 12F Verify 22-28VAC off gas valve during ignition trial. Verify blower air inlet plate Step 12G Verify that the installed flame sensor is damaged, replace...
uhs_qrg_20f0
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... be within the values on the gas valve. Inlet Port Outlet Port Maximum water ow = 125GPM Gas Pressure Testing Natural Gas Manifold Gas Pressure SAMPLE CERTIFIED 2.0" Maximum inlet gas pressure 10.5" Minimum inlet gas pressure 4.5" Outlet of Gas Valve Static Pressure Load Pressure Propane Manifold Gas Pressure 7.0" PLE CERTIFIED Maximum inlet gas pressure 13.0" M Minimum inlet gas pressure SA 10.0" Using a Manometer...
... be within the values on the gas valve. Inlet Port Outlet Port Maximum water ow = 125GPM Gas Pressure Testing Natural Gas Manifold Gas Pressure SAMPLE CERTIFIED 2.0" Maximum inlet gas pressure 10.5" Minimum inlet gas pressure 4.5" Outlet of Gas Valve Static Pressure Load Pressure Propane Manifold Gas Pressure 7.0" PLE CERTIFIED Maximum inlet gas pressure 13.0" M Minimum inlet gas pressure SA 10.0" Using a Manometer...
uhs_qrg_20f0
Page 2
Programming Diagnostic Codes: AC - Flame present with gas valve not energized HS - Igniter circuit open (check voltage selector plug on new...Limit is Pre-set To Energy-saving 90 F, See Owner's Manual. To take a closer look or see other Hayward products please go to adjust max temp. Blower vacuum switch open LO - Bad board HF - Water pressure switch, ... Pool Temp Limit is Pre-set To Energy-saving 90 F, See Owner's Manual. use arrowSEsRVICE STANDBY to : www.hayward.com or call 1-800-432-8387 QRG-UHSe TEMP SET TEMP SET TEMP SET Quick Reference Guide - Keypad failure (...
Programming Diagnostic Codes: AC - Flame present with gas valve not energized HS - Igniter circuit open (check voltage selector plug on new...Limit is Pre-set To Energy-saving 90 F, See Owner's Manual. To take a closer look or see other Hayward products please go to adjust max temp. Blower vacuum switch open LO - Bad board HF - Water pressure switch, ... Pool Temp Limit is Pre-set To Energy-saving 90 F, See Owner's Manual. use arrowSEsRVICE STANDBY to : www.hayward.com or call 1-800-432-8387 QRG-UHSe TEMP SET TEMP SET TEMP SET Quick Reference Guide - Keypad failure (...
