Rheem 834 Series Service Instructions Manual page 31

Fault Finding Chart 1.2
False flame, ignition failure or
1.2
loss of flame (continued)
Does pilot light during
ignition period?
YES
Is pilot flame
satisfactory?
Pilot flame should extend past
flame rod by approx 5 mm and
flame rod should glow red.
YES
Does main burner
NO
ignite?
YES
SV3 is main
burner valve
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.
NO
NO
SV2 is main burner
safety valve
Is 1.1 ~ 2.1 VDC
present at SV2 when
NO
pilot is alight?
(TEST 9)
YES
Is 1.1 ~ 2.1 VDC
present at SV3 when
pilot is alight?
(TEST 10)
SV1 is pilot
Is 1.1 ~ 2.1 VDC
valve
present at SV1 during
NO
ignition period?
(TEST 8)
YES
Is pilot feed pipe, pilot
injector or pilot assy YES
dirty or blocked?
NO
Is pilot injector correct
NO
size for gas type?
YES
Is flame sensor lead
firmly connected to NO
flame sensor?
YES
Is flame sensor clean
NO
and free from cracks?
YES
Is flame sensor rod
touching a metal
component?
NO
Is flame sensor
NO
correctly adjusted?
YES
Replace ignition module
Does red LED 4 flash
fault indication NO
persist?
YES
NO
YES
Replace ignition module.
Clean or replace pilot feed pipe
or pilot assembly (pilot injector is
not available as a spare part).
Replace pilot injector with one of
the correct size.
Replace gas valve assembly.
Firmly connect flame sensor
lead to flame sensor.
Clean flame sensor or replace
pilot assembly. (flame sensor is
not available as a spare part).
YES
Correctly adjust flame sensor.
Refer to 'Checking & Adjusting
the Flame Sensor' in the
'Component Adjustment
Procedures & Checks' section.
Fault rectified.
Replace temperature controller
and reinstall original ignition
module.
Replace temperature controller.
Replace gas valve assembly.
1.3
31