Instructions / Assembly

24
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 vapors or blockage of the
combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
CAUTION: For your safety DO NOT attempt repair of garol (thermostat), burners, vent connectors, dampers, or other
safety devices. Refer repairs to qualified service personnel.
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 20.
Relief valve producing
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 24.
“ON/OFF” switch turned off. Turn “ON”.
Gas Control (thermostat)
shutoff device has tripped.
Contact a qualified service technician.
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) is
Defective.
Contact a qualified service technician to replace 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.