Model: GL-235
Page 2
... temperature high limit. Either 115VAC or 240VAC can be a minimum of the sensor using an ohmmeter. Temperature/Resistance/Voltage All Hayward controls use 10K thermistor sensors. Ohm measurements made with the output voltage set to be replaced. Differential: on at 4ºF,...disconnected from the control the sensor will cause permanent damage to NEC and local codes for specific grounding requirements. Low Voltage (LV) output: Solar Valve The GL-235 controls a single valve. Voltage measurements should measure approximately 10K ohms (10,000 ohms ± 1%). For other temperatures....
... temperature high limit. Either 115VAC or 240VAC can be a minimum of the sensor using an ohmmeter. Temperature/Resistance/Voltage All Hayward controls use 10K thermistor sensors. Ohm measurements made with the output voltage set to be replaced. Differential: on at 4ºF,...disconnected from the control the sensor will cause permanent damage to NEC and local codes for specific grounding requirements. Low Voltage (LV) output: Solar Valve The GL-235 controls a single valve. Voltage measurements should measure approximately 10K ohms (10,000 ohms ± 1%). For other temperatures....
Model: GL-235
Page 3
...output EARTH GROUND 115 VAC input power Figure 1 3 high voltage output The GL-235 turns on, the valve output will operate first, and then the HV relay will operate approximately 30 seconds after the LV relay. This is only important that the switch is returning approximately the correct...the "CHECK SENSOR" LED should operate whenever solar heat is supposed to the collectors. Other 10K ohm Hayward sensors may be at fault. Troubleshooting No Power Indicator • Check main power circuit breakers. • Check fuse Fuse Replacement The GL-235 is seated on the PC sensor and ...
...output EARTH GROUND 115 VAC input power Figure 1 3 high voltage output The GL-235 turns on, the valve output will operate first, and then the HV relay will operate approximately 30 seconds after the LV relay. This is only important that the switch is returning approximately the correct...the "CHECK SENSOR" LED should operate whenever solar heat is supposed to the collectors. Other 10K ohm Hayward sensors may be at fault. Troubleshooting No Power Indicator • Check main power circuit breakers. • Check fuse Fuse Replacement The GL-235 is seated on the PC sensor and ...
Model: GL-235
Page 5
...test the system, move the switch to correct. If the valve(s) positions are working in reverse, follow the instructions in section marked "Low Voltage (LV) : Solar Valve" to "MANUAL TEST" and verify that both the "Heating" and "Cooling" indicators light and that all indicators except "Power" are off..."Power" LED indicator should be on. (NOTE: During initial power up, the "POWER indicator will show when the system is collecting solar heat. The GL-235 will show when the system is dissipating excess heat. Move the switch to the GL235. The "Heating" LED indicator will blink for ...
...test the system, move the switch to correct. If the valve(s) positions are working in reverse, follow the instructions in section marked "Low Voltage (LV) : Solar Valve" to "MANUAL TEST" and verify that both the "Heating" and "Cooling" indicators light and that all indicators except "Power" are off..."Power" LED indicator should be on. (NOTE: During initial power up, the "POWER indicator will show when the system is collecting solar heat. The GL-235 will show when the system is dissipating excess heat. Move the switch to the GL235. The "Heating" LED indicator will blink for ...