TM090 12-26 Series II CFGWH Service Instructions
REV AB – Issued February 2019
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”
F1
G.I.S.V (SVO) ON
11 Flashing
11
Operational Flow Chart 2
Igniter ON
P.G.F.R Valve Min
12
S.V. 2 (SV2) ON13
P.G.F.R Valve SI10
Igniter OFF
S.V. 3 (SV3) OFF
P.G.F.R Valve OFF
S.V. 2 (SV2) OFF
S.V. 1 (SV1) OFF
I.U.I. Off
Leakage >
than 0.1uA
NO
3 sec later
YES
I.U.I. ON
Igniter OFF
YES
Proportional temp adjustment
Hot water volume adjustment
14
10 Flashing
YES
74, 75 or 76 Flashing
3
32 Flashing 33 Flashing 35 Flashing14 Flashing 15 Flashing 31 Flashing
99 Flashing52 Flashing 71 Flashing 79 Flashing61 Flashing 81 Flashing65 Flashing
NO
B
P.G.F.R.
control failure
Water inlet
thermistor
disconnected
Decrease of
fan motor
ventilation
(operation stop)
Heat
exchanger
thermistor
disconnected
Heat
exchanger
water temp >
140 C
O.H.L.
Working
Thermistor
connections
crossed
Hot water
outlet
thermistor
disconnected
G.I.S.V.
S.V.1~3
O.H.L.
control failure
Failure to detect
fan motor current
Fan failure
False flame
detection
Malfunction of
water volume
control motor
S.V.2 (SV2) OFF
Igniter OFF
12 Flashing
A
NO
34 Flashing
NO S.V. 3 (SV3) OFF
P.G.F.R Valve OFF
S.V. 2 (SV2) OFF
S.V. 1 (SV1) OFF
I.U.I. Off
Flame failure
8
E
YES
NO
16
15
Gas rate change-over
done by solenoid valves
YES
4
Flame Detected? Fifth ignition trial?
Fan ventilation
warning
Communication issue
with remote controller &
heater
YES
Ambient air
thermistor
disconnected
YES
Safety device
working
Outlet temp > set
temp
NO
Fifth flame
failure
NO
F2
G.I.S.V. (SV0) OFF
G.I.S.V. (SV0) OFF
G.I.S.V. (SV0) OFF
NO
Shut down
YES
YES
OFC 1
OFC 1
Note: see page 22 for details on interpreting chart abbreviations.
To Next Page
Loading...
Need help?
General
