Residential Gas Troubleshooting Guide
REMOVAL AND REPLACEMENT OF THE GAS CONTROL VALVE / THERMOSTAT INVOLVES THE DISCONNECTION OF GAS PIPING, MANIFOLD TUBE, PILOT TUBE, AND THERMOCOUPLE. IT IS RECOMMENDED THAT THIS PROCEDURE BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN.
| PROBLEM |
POSSIBLE CAUSE(S) |
CORRECTIVE ACTION |
INSUFFICIENT
HOT WATER
|
- Low gas pressure
- Thermostat set too low
- Sediment or lime in tank
- Water heater too small
|
- Check with gas utility company
- Turn temperature dial to higher setting
- Drain/flush-provide water treatment if needed
- See Sizing Guides.
|
|
SLOW HOT WATER RECOVERY
|
- Thermostat set too low
- Heater too small
|
|
|
DRIP FROM RELIEF VALVE
|
- Excessive water pressure
- Heater stacking
|
- Use a pressure reducing valve and relief valve.
- Lower the thermostat setting
|
|
SMELLY WATER
|
Sulfides in the water
|
Replace the aluminum anode with a KA90 anode
|
|
CONDENSATION
|
Temperature setting too low
|
Increase the temperature setting. See owner's manual.
|
|
THERMOSTAT FAILS TO SHUT OFF
|
Improper calibration
|
|
|
PILOT WILL NOT LIGHT OR REMAIN LIT
|
- Low gas pressure
- Air in gas line
- No gas
- Dirt in gas lines
- Pilot line or orifice clogged
- Thermocouple connection loose
- Thermocouple
- Thermostat ECO switch open
|
- Check with gas utility company
- Bleed the air from the gas line
- Check with gas utility company
- Notify utility-install dirt trap in gas line
- Clean, locate source and correct
- Finger tighten-then 1/4 turn with wrench
- Contact technician to replace thermocouple
- Contact technician to replace thermostat
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