Operating Instructions
Page 35
The following heat status messages are displayed in The following conditions are displayed in Pool, Spa and Remote modes. Display Condition Sensor Failure Thermistor temperatures disagree by more than 2°F Sensor Open Thermistor sensor failed open . LoNox Tab Fault Voltage is a demand for 6 minutes before retrying. 35 Hi Limit 1 Fault High limit 1 open . Rollout Sw...
The following heat status messages are displayed in The following conditions are displayed in Pool, Spa and Remote modes. Display Condition Sensor Failure Thermistor temperatures disagree by more than 2°F Sensor Open Thermistor sensor failed open . LoNox Tab Fault Voltage is a demand for 6 minutes before retrying. 35 Hi Limit 1 Fault High limit 1 open . Rollout Sw...
Operating Instructions
Page 46
...YES • Check On/Off switch (under lid on digital circuit board. YES Diagnostic Readouts "Sensor Failure," "Sensor Open" or "Sensor Short" Temperature sensor out of range (replace sensor) Sensor Failure Inspect thermister, wires, and connector at tube fitting). If okay, replace Circuit Board. Check for ... Replace thermister if not within 10% of the thermister. Verify water flow. Vent switch open. "Ignition Lockout" "Ignition Failure" Ignition lockout. Sensor resistance at various temperatures Temp Degrees F 40 50 60 70 80 90 100 106 Resistance (k) 261.1 199.0 153.1 ...
...YES • Check On/Off switch (under lid on digital circuit board. YES Diagnostic Readouts "Sensor Failure," "Sensor Open" or "Sensor Short" Temperature sensor out of range (replace sensor) Sensor Failure Inspect thermister, wires, and connector at tube fitting). If okay, replace Circuit Board. Check for ... Replace thermister if not within 10% of the thermister. Verify water flow. Vent switch open. "Ignition Lockout" "Ignition Failure" Ignition lockout. Sensor resistance at various temperatures Temp Degrees F 40 50 60 70 80 90 100 106 Resistance (k) 261.1 199.0 153.1 ...
Operating Instructions
Page 51
...HP) Return Header (Includes 6-HP) Tube Bundle Copper ** Tube Bundle Cupro Nickel ** Baffle Flange Nut Kit O Ring Gasket (2) Sensor Adapter Digital Electronic Sensor Well Millivolt Bypass Kit Bypass Valve Bypass Dam / Shaft Bypass Spring (All Sizes Included) Unitherm Governor Unitherm Governor Plug Drain Plug Inlet... likely also damaged the bypass valve and Unitherm Governor. Pro. IID Combination Valve - IID HEAT EXCHANGER - Failure to do so could cause premature failure of this replacement part. 336A 010393F 010397F 010401F 010405F 010409F 010413F 010417F 301210/22 350079F/22 350083F/22 010423F...
...HP) Return Header (Includes 6-HP) Tube Bundle Copper ** Tube Bundle Cupro Nickel ** Baffle Flange Nut Kit O Ring Gasket (2) Sensor Adapter Digital Electronic Sensor Well Millivolt Bypass Kit Bypass Valve Bypass Dam / Shaft Bypass Spring (All Sizes Included) Unitherm Governor Unitherm Governor Plug Drain Plug Inlet... likely also damaged the bypass valve and Unitherm Governor. Pro. IID Combination Valve - IID HEAT EXCHANGER - Failure to do so could cause premature failure of this replacement part. 336A 010393F 010397F 010401F 010405F 010409F 010413F 010417F 301210/22 350079F/22 350083F/22 010423F...
Operating Instructions
Page 52
... Gray) Tie Down Bracket (Optional) Texas Code Add/On (ASME Only) PILOT Pilot Nat. Plug Bypass Valve Bypass Spring Drain Valve Sensor Well Well Retaining Clip Rear Drain Plug & Cover CONTROL BOX Transformer 120/240/24V Rocker Switch MISCELLANEOUS COMPONENTS Pressure Switch 1.75 PSI Pressure...Units manufactured prior to fail have very likely also damaged the bypass valve and Unitherm Governor. MV Pilot Pro. Failure to do so could cause premature failure of this replacement part. 336A 010053F 010362F 006730F 012319F 003766F 062236B 800080B 006731F 010057F 010370F 010040F 007870F 800014B 062234B...
... Gray) Tie Down Bracket (Optional) Texas Code Add/On (ASME Only) PILOT Pilot Nat. Plug Bypass Valve Bypass Spring Drain Valve Sensor Well Well Retaining Clip Rear Drain Plug & Cover CONTROL BOX Transformer 120/240/24V Rocker Switch MISCELLANEOUS COMPONENTS Pressure Switch 1.75 PSI Pressure...Units manufactured prior to fail have very likely also damaged the bypass valve and Unitherm Governor. MV Pilot Pro. Failure to do so could cause premature failure of this replacement part. 336A 010053F 010362F 006730F 012319F 003766F 062236B 800080B 006731F 010057F 010370F 010040F 007870F 800014B 062234B...
Operating Instructions
Page 54
...013794F 013793F 003765F 300203 005264F 54 Retainer Spring 013792F 013792F 013792F 18-HM U.G. Failure to 1/2011 N/A N/A N/A Units manufactured From 1/2011 013640F 013640F 013640F 8-C Fuse 5 AMP 013733F 013733F 013733F 6-C Temperature Sensor 009577F 009577F 009577F 7-C Blower Pressure Switch 008062F 008135F 010354F G GAS VALVE ... 062235B 062235B 11-HM Bypass Spring 850252 013794F 013794F 12-HM Drain Valve 013793F 013793F 013793F 13-HM Sensor Well 003765F 003765F 003765F 14-HM Well Retaining Clip 300203 300203 300203 17-HM Rear Drain Plug & ...
...013794F 013793F 003765F 300203 005264F 54 Retainer Spring 013792F 013792F 013792F 18-HM U.G. Failure to 1/2011 N/A N/A N/A Units manufactured From 1/2011 013640F 013640F 013640F 8-C Fuse 5 AMP 013733F 013733F 013733F 6-C Temperature Sensor 009577F 009577F 009577F 7-C Blower Pressure Switch 008062F 008135F 010354F G GAS VALVE ... 062235B 062235B 11-HM Bypass Spring 850252 013794F 013794F 12-HM Drain Valve 013793F 013793F 013793F 13-HM Sensor Well 003765F 003765F 003765F 14-HM Well Retaining Clip 300203 300203 300203 17-HM Rear Drain Plug & ...