For Service. Rheem XE30T06MH45U1, XE40T06MH45U1

16

Before You Call For Service…

Troubleshooting Tips

Save time and money! Review the chart on this page first and you may not need to 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

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.

What To Do

● Remove and clean the heating elements.

● 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.

● This is normal for heat trap fittings when in operation

and does not indicate a need for service.

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.

The thermostat is set too high.

● Wait for the water heater to recover after an abnormal

demand.

●

●

disconnect switch, if used, are in the ON position.

●

section of this manual.

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●

●

●

●

Replace fuse or reset circuit breaker.

Make sure electric supply to water heater and

See the Temperature regulation of the water heater

Make sure all faucets are closed.

Contact the local electric utility.

See the Installing the water heater section of this

manual.

See the Temperature regulation of the water heater

section of this manual.

This is normal. The colder inlet water takes longer

to heat.

● See the Temperature regulation of the water heater

section of this manual.

CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or other safety devices. Refer repairs to qualified service personnel.