Rheem II Series User Manual

TM090 12-26 Series II CFGWH Service Instructions
REV AB – Issued February 2019
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”
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Fault Finding Chart 3
Ignition and Temperature Control
YES
NO
Operation switch
malfunction
Thermistor
malfunction
NO
Fan speed
abnormal
YES
Test 17
NO
Replace the remote controller.NO
YES
Release the Min/Max buttons and
re-open a hot tap.
YES
Ensure sensor leads are not
damaged and are correctly
inserted into PCB. If all ok then
replace the PCB assembly.
NO
YES
*Thermistor error codes
31 = Water inlet thermistor
32 = Heat exchanger thermistor
33 = Hot water outlet thermistor
34 = Ambient air thermistor
YES
Replace the relevant thermistor.NO
Replace the PCB assembly.NO
Test 4
Test, 5,6,7,8
YES
NO
NO
YES
Replace the PCB assembly.YES
Test 4
3
3.1
Replace the fan motor assembly.
Is error code 24
shown on error code
display also?
Also when Min/Max
button is pressed?
*Is the resistance of
the relevant
thermistor normal?
Is error
code 24
displayed?
*Is error code 31,
32, 33 or 34
displayed?
Is error code 61
displayed?
Is voltage being
supplied to the
fan motor?
Is the fan motor
rotating?
Is a pulse
signal being
sent from the
fan motor?
Replace the PCB assembly.

Rheem II Series Specifications

General

Brand	Rheem
Model	II Series
Category	Water Heater
Language	English