Troubleshooting Tips; For Service - Rheem Gladiator Use & Care Manual

Before You Call For Service...
Problem
Rumbling noise
Relief valve
producing popping
noise or draining
Rattling noise
during periods
of water usage
Not enough or
no hot water
Water is too hot
Cannot set
above 140°F
! CAUTION: For your safety DO NOT attempt repair of electrical wiring, temperature sensor, electronic control,
heating elements or other safety devices. Refer repairs to qualified service personnel.
22

Troubleshooting Tips

Save time and money! Review the chart on this page
first and you may not need to call for service.
Possible Causes
Water conditions in your home
caused a build up of scale or
mineral deposits on the heating
elements.
Pressure build up caused by
thermal expansion in a closed
system.
Internal heat trap fittings in
operation.
Water usage may have exceeded
the capacity of the water heater.
A fuse is blown or a circuit
breaker tripped.
Electric supply may be off.
The thermostat may be set set
too low.
Leaking or open hot water
faucets.
Electric service to your home
may be interrupted.
Improper wiring.
Manual reset limit (ECO).
Cold water inlet temperature
may be colder during the winter
months.
Auto shutoff valve is closed
The thermostat is set too high.
The keypad is locked
What To Do
● Remove and clean the heating elements.
T his 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.
T his is normal for heat trap fittings when in operation
●
and does not indicate a need for service.
W ait for the water heater to recover after an abnormal
●
demand.
● Replace fuse or reset circuit breaker.
M ake sure electric supply to water heater and disconnect
●
switch, if used, are in the ON position.
S ee the Temperature regulation of the water heater sec-
●
tion of this manual.
● Make sure all faucets are closed.
● Contact the local electric utility.
S ee the Installing the water heater section of this
●
manual.
S ee the Temperature regulation of the water heater sec-
●
tion of this manual.
T his is normal. The colder inlet water takes longer to
●
heat.
T urn power off to the water heater. Press and rotate the
●
shutoff valve knob counterclockwise until it stops. The
arrow of the valve position indicator will be pointed to
OPEN.
S ee the Temperature regulation of the water heater sec-
●
tion of this manual.
S ee configuration menu section on programming the
●
electronic control.