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GENERAL CHECKS
Is power available in wall outlet?
Is power Plug inserted in wall outlet?
Has there been a power intemjpdon? (Display window shows 88:88)
Has Circulation Fan stopped?
Is Manual Gas Valve 'open* ?
Is Operation Switch on?
Is operation mode on Manual?
Is set temperature higher than room tamperature?
Is child lock feature engaged (disengaged)?
REASON
CORRECTIVE MEASURE
P~ DoeiConilJuilluci
Blower motor
operate?
M
No
1—
ls
wiring
-pj
Yes
1 - 1
1
'
correct?
'
'
'
'
-1
No.
1—
-
mmm
r
L
-
.
ai e
cu
Incorrect wiring of Flame
sensor or Ground.
Flame sensor rod touches
to burner parts.
Failure of Gas Control Valve.
Failure of Automatic Gas Valve.
!
Failure of Combustion Blower
motor.
Failure of Circuit Board.
Incorrect or disconnected wiring.
VMV
-
-
~
-
Redac
C
' Boar
Correct wiring.
Correct or Change.
Turn VR 2- on PCB clockwise
1/8 turn and check pressures.
1
Check for Air blockage.
Replace Air Pressure Switch.
[
Replace Automatic
Gas Valve Unit.
Replace Automatic
Gas Valve Unit.
[
Replace Combustion Blower
Motor.
Replace or check Circuit Board.
Correct wilting.
•4 Failure of Ignition Transformer.
I
' •• Replace Ignition Transformer.
j
1
1
Failure of Circuit Board.
1
1 Replace or check Circuit Board.
—4 Incorrect wiring.
1
I Correct wiring.
^ There is not 1 1 0V at plug.
Failure of Circuit Board.
Failure of Ignition Transformer
relay on PCB. Replace PCB.
Replace or check
Circuit Board.
i
Fuse open.
Change fuse.
J
-I Short circuit of lead wire.
I
I Correct or change.
I
•-
Failure of Circuit Board.
Replace or check Circuit Board.
Is in Auto operation mode.
I
1 Put in Manual-Bum Mode.
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