TROUBLESHOOTING QUICK REFERENCE
IMPORTANT: Before performing any test, check the area around the water heater for any source of a flammable vapor (i.e gasoline, paint thinners, etc.) If any sources are found do not proceed until they are removed.
PROBLEM
POSSIBLE CAUSE
TEST / CORRECTIVE ACTION
NO HOT WATER:
Insufficient Combustion Air or Venting Issues – combustion chamber thermal cut off tripped.
Pilot will not light
Pilot will not remain lit when top gas control knob is released
Burner will not light or remain lit.
Follow the steps on pp 18 – 19. Always check and clean the base ring filter and the flame arrestor.
Check gas supply/Bleed air from gas line/turn gas on.
Test thermocouple and gas control valve/ thermostat as described on pp
Low gas pressure – check as described on p
18.Insufficient combustion air – follow steps on pp 18
INSUFFICIENT HOT WATER:
Water heater improperly sized to meet hot water demands
Compare hot water requirements with the capacity of the water heater. See sizing guide on p. 25. You may also use the volume test on page 34 to analyze your hot water needs. If necessary, install a water heater with greater capacity.
Gas Control Valve/Thermostat set | Turn temperature dial to desired temperature |
too low | as described on p. 24 |
Sediment or lime in the tank | Drain (p. 17). Determine if water treatment is |
| needed (p. 29). |
WATER LEAKAGE:
Condensation
Dripping Temperature & Pressure Relief Valve
Adjust the thermostat setting (p 24).
Check water supply pressure.
In closed systems, the supply pressure should not exceed 80 psi (in a 24 hour cycle). If the pressure exceeds 80 psi, install a pressure reducing valve in combination with a properly sized thermal expansion tank (pp.
