Error Code 71; Error Code 72; Error Code 76 - Rheem 874W27NF Service Manual

Error Code 71

Gas Inlet Solenoid Valve (GISV) fault.
Error Code 71
Is multi-pin plug fully inserted
into terminal W on control
PCB?
YES
Is there voltage at the GISV?
TEST 9

Error Code 72

Follow the same procedure as used in Error Code 51.

Error Code 76

Communication Fault with Remote Temperature Control.
Error Code 76
Inspect each of the remote
controls that are fitted to the
appliance and ensure that there is
no duplication of controllers.
Remove all remote control cables
from terminal block on underside
of heater.
Will the unit operate with
remote controls removed?
NO
Replace control PCB.
TM061 Rheem 27 Water Star Service Instructions – Issued: 11/10
REV A Issued 08/13
This document is stored and maintained electronically by
NO
NO
YES
Error code 76 will remain if more than 1
type of the same controller is fitted.
YES
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
Ensure multi-pin plug is fully
inserted.
Check wiring, if intact replace the
control PCB.
Replace the gas valve assembly.
Either the wiring or one of the controllers is at
fault. Connect up each controller one at a time
on a new cable to identify the faulty item.
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