39
Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call for
service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater down
if undesirable combustion conditions occur, such as the presence of flammable vapours or blockage of the
combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
Problem
Possible Causes
What To Do
Rumbling noise
Scale and sediment
Drain the water heater to remove scale and
sediment from the tank. Refer to the top of
page 26.
Relief valve pro-
ducing popping
noise or draining
Pressure build up caused
by thermal expansion to a
closed system.
This is an unacceptable condition and must be
corrected. Contact the water supplier or
plumbing contractor on how to correct this.
Do not plug the relief valve outlet.
Not enough or no
hot water
Water usage may have
exceeded the capacity of
the water heater.
Wait for the water heater to recover after an
abnormal demand.
Low gas pressure.
Check gas supply pressure and manifold
pressure.
The gas control
(thermostat) may be set
too low.
See the “Water Temperature Setting” of The
Water Heater section of this manual.
Leaking or open hot water
faucets.
Make sure all faucets are closed.
Check valve error codes.
Refer to gas valve error code table on page 37.
“ON/OFF” switch turned
off.
Turn “ON”.
Blower unplugged.
Plug in. Verify power supply (120VAC).
Combustion Shutoff
System tripped
Contact a qualified service technician.
Water is too hot
The gas control
(thermostat) is set too
high.
See the “Water Temperature Setting” of The
Water Heater section of this manual.
Gas Control (Thermostat)
Defective.
Contact a qualified service technician to re
-
place the gas control (thermostat).
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent
connectors or other safety devices. Refer repairs to qualified service personnel.
CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiri
ng errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
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