Rheem 834 Series Service Instructions Manual page 26

Fault Finding Chart – Red LED 5 Flash Indication
Hot water outlet temperature
Red LED 5 Flash
Are all wiring plugs
and wiring connectors
firmly connected?
YES
Is hot water outlet
temperature sensor
ok? (TEST 1)
Fault Finding Chart – Red LED 6 Flash Indication
Main burner circuit
Red LED 6 Flash
Is heater the correct
gas type for the
premises gas supply?
YES
Are all wiring plugs
and wiring connectors
firmly connected?
YES
Is gas isolation valve
fully open?
Refer to 'DIP Switch Adjustments'
YES
in the 'Component Adjustment
Procedures & Checks' section.
Are temp controller
DIP switches 1 ~ 6 in
the correct position?
Refer to 'Checking Inlet Gas Pressure'
YES
in the 'Component Adjustment
Procedures & Checks' section.
Is inlet gas pressure
within specification?
YES Refer to 'Checking & Adjusting Burner Gas
Pressure' in the 'Component Adjustment
Are burner min and
max gas pressure
settings correctly
adjusted?
YES
Is hot water outlet
temp sensor ok?
(TEST 1)
YES
Are main burner
injectors correct size
for gas type?
YES
Are burner injectors
dirty or partially
blocked?
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.
sensor abnormal
YES
This fault will occur if a 15°C temp rise is not detected by the hot water outlet temp
sensor within 45 ~ 180 seconds from main gas valve (SV2 & SV3) energisation
abnormal
(actual time is flow rate dependent). This fault can take up to 225 seconds to occur
from when a hot tap is opened.
NG: 1.13 ~ 3.5 kPa
LPG: 2.75 ~ 3.5 kPa
Procedures & Checks' section.
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
Firmly connect wiring
connector(s) and/or plug(s).
Replace hot water outlet
temperature sensor.
Replace temperature controller.
Replace heater with a heater of
the correct gas type.
Firmly connect wiring
connector(s) and/or plug(s).
Fully open gas isolation valve.
Ensure DIP switches 1, 2 and
3 are in the OFF position and
ensure DIP switches 4, 5 and 6
are in the correct position
according to heater model and
gas type.
Advise customer that inlet gas
pressure is not within
specification.
1.4
Replace hot water outlet
temperature sensor.
Replace main burner injectors
with injectors of the correct size.
Clean or replace burner
injectors.
Clean or replace burner.
26