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”
41
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

Category	Water Heater
Series	II Series
Type	Electric
Energy Factor	0.95
Voltage	240V
Wattage	4500-5500W
Warranty	6 years
Diameter	22 inches
Capacity	40-80 gallons