Rheem 834 Series Service Instructions Manual page 29

Fault Finding Chart 1
1
Heater not operating
Do temp controller
LED's indicate a fault
condition?
NO
Are all wiring plugs
and wiring connectors
firmly connected?
NO
Is water flow rate
through heater
> 3 L/m?
YES
TM081 Rheem 834 Series Hydroelectric CFGWH Service Instructions
REV: AA Issued: 22/02/17
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed uncontrolled.
Are hot tap(s) opened
NO
enough?
Is cold water isolation
valve fully open?
Minimum water supply Is water supply
pressure is 150 kPa. pressure adequate?
Is water inlet strainer
blocked?
Is cold water inlet /
seasonal adjustment
valve assy blocked?
Is hydroelectric
generator / water flow
sensor assy blocked?
Is water throttle valve
assy blocked?
Is hot water outlet
assy blocked?
Is pipework to and
from heat exchanger
blocked?
YES
YES
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Refer to fault finding chart for
the fault indication displayed.
Firmly connect wiring
connector(s) and/or plug(s).
Hot tap(s) must be opened
enough i.e. water flow rate
through the heater must be
> 3 L/m.
Fully open cold water isolator
located adjacent to heater.
Advise customer that water
supply pressure is not within
specification.
Clean or replace water inlet
strainer.
Unblock or replace cold water
inlet / seasonal adjustment valve
assembly.
Unblock hydroelectric
generator / water flow sensor
assembly.
Unblock or replace water throttle
valve assembly.
Unblock or replace hot water
outlet assembly.
Unblock or replace blocked
pipework.
Unblock or replace blocked heat
exchanger.
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