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This troubleshooting guide has been supplied for use by qualified service personnel who have a complete understanding of both
electricity and gas.
Label all wiring before disconnecting any wiring; to ensure correct reconnection. Failure to follow this instruction could cause
improper and possible dangerous operation, resulting in DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE.
TROUBLESHOOTING (Continued)
THERMOSTAT AND GAS SUPPLY CHECK
NO
Is gas being supplied to the
thermostat?
YES
Is thermostat calling for heat?
Run (HOT) water from heater and
set adjustment button higher.
Check using a manometer at
thermostat pressure tap.
YES
Is there a minimum gas pressure
4” W.C. for natural gas or 10” W.C.
for propane (L.P.) gas?
NO
Call gas company to increase gas
pressure.
YES
GO TO SYSTEM CHECK
SECTION, PAGE 39.
Turn “ON” gas supply.