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.
38
Fault Finding Chart 5
NO
Replace heater with a heater of
the correct gas type.
5
Is the noise water
hammer?
Noisy heater
NO
Are temp controller
DIP switches 1 ~ 6 in
the correct position?
NO
YES
E
nsure 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
.
Refer to ‘DIP Switch Adjustments’
in the ‘Component Adjustment
Procedures &
Checks’ section.
Refer to ‘Checking Inlet Gas Pressure’
in the ‘Component Adjustment
Procedures &
Checks’ section.
Is gas inlet pressure
correct?
Advise customer that gas supply
pressure is not within
specifications.
NO
YES
NG: 1.13 ~ 3.5 kPa
LPG: 2.75 ~ 3.5 kPa
Is heater the correct
gas type for the
premises gas supply?
Refer to ‘Water Hammer’ in the
‘Common Complaints’ section.
YES
YES
Is the noise only
evident when water is
flowing through the
heater?
YES
Check all other appliances that
can generate noise i.e.. washing
machine, dishwasher, ball cocks
e.t.c.
NO
Are burner min and
max gas pressure
settings correctly
adjusted?
Refer to ‘Checking & Adjusting
Burner Gas Pressure’ in the
‘Component Adjustment
Procedures &
Checks’ section.
NO
1.4
Is noise harsh burner
flame noise?
YES
Check to ensure burner injectors
are not partially blocked and are
the correct size for the heater
gas type.
YES
Check for restrictions in pipe
work, faulty valves, loose
plumbing, other appliances that
use hot water i.e. washing
machine or dishwasher.
NO
