TM039 Rheem Water Star Service Instructions REV: A
Date of Issue: 02/09
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11
Fault Finding Chart 1.1
No hot water
Replace thermostat
Replace thermostat
Replace thermostat
Replace element
Locate wiring failure
and repair
Are the
thermostat ECO
contacts closed?
Are the
thermostat
contacts closed?
Is the overall
resistance of the
water heater
correct?
Does the element
have the correct
resistance?
Did the thermostat
contacts close?
Is the water in the tank at
least 6 degrees lower
than the thermostat
setting?
NO
NO
YES
NO
YES
Water heater electrically OK.
Slide the thermostat out from
under the retaining clamp and
allow base to cool.
YES
Test 5
Test 6
Test 7
Test 8
NO
Test 6
NO
YES
YES
2.
YES
1.1
NO
