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7. Error Code [72] (Detected False Flame) is displayed.
Display maintenance information [0y].
Does the [0y]
indicate [01] ~ [07]
(remaining flame)?
NO
YES
Pull out the relay connection of
the flame rod connectors
and perform [0y] again.
M
NOTE: Make sure whether there is any remaining flame or not. (Visually)
If yes, replace Gas Control Assembly.
[0y] indicates the flame signal (flame detection).
The water heater seems to be
normal. Try to operate again.
YES
Does the [0y]
indicate [01] ~ [07]
(remaining flame)?
NO
YES
Replace Burner Control Assy.
Clean or replace Burner and
Flame Rod Electrode.
E. The igniter does not spark and indicates Error Code [11] even when the Fan is operating.
(Ignition Failure)
Does Igniter
have a voltage?
*1
NO
YES
Replace Burner Control Assy.
*1 Measure the voltage of connector .
Between both Gray wires: 90 ~ 110 VAC
H
Is the
electrode clean?
Is the electrode damage?
Is the wiring damaged?
NO
YES
Clean or replace Electrode.
Replace the wiring.
Replace Igniter Assy.
Flame Rod 1
Flame Rod 2
Flame Rod 3
Flame Rod Status
[0y] INFORMATION 00 01 02 03 04 05 06 07
X
X
X
X
X
X
X X
X
X X
X
O
O
O
O
O
O
O
O
O
O
O O
[00]: Indicates there is no remaining flame.
X: Flame Rod is not detecting flame.
O: Flame Rod is detecting flame.
L
T
Summary of Contents for PH-28CDVSN
Page 16: ...Operational Flow Chart Maintenance Information 16...
Page 18: ...18...
Page 19: ...MAINTENANCE INFORMATION SHOWN IN LED DISPLAY OF REMOTE CONTROL ABOVE 19...
Page 44: ...44...
Page 53: ...Schematic Disassembly PH 28RIFS 53...
Page 54: ...Schematic Disassembly PH 28ROF 54...
Page 55: ...Schematic Disassembly PH 28RIFS PH 28ROF 734 55...
Page 58: ...Schematic Disassembly PH 28CIFS 58...
Page 59: ...Schematic Disassembly PH 28COF 59...
Page 60: ...Schematic Disassembly PH 28CIFS PH 28COF 734 60...
Page 63: ...Schematic Disassembly PH 28RDVS 63...
Page 64: ...Schematic Disassembly PH 28CDVS 64...
