American Water Heater PowerVent Use & Care Manual page 31

Gas Valve Error Codes
GAS VALVE
STATUS/PROBLEM
LED
Short flash once IDLE (no call for heat,
every four seconds no fault conditions)
"Heartbeat", alter- Call For Heat (no fault
nates bright/dim conditions)
Low flame signal
One Flash, three
(control continues to
second pause
operate)
Two Flash, three Pressure switch failed
second pause. closed
Three Flash, three Pressure switch failed
second pause open.
Four Flash, three
TCO limit lockout
second pause
Four Flash, three
Flame out of sequence
second pause
Six-One Flash,
Failed trial for ignition
three second pause
Six-Two Flash, Recycle limit - PS/limit
three second pause opened
Six-Three Flash, Recycle limit - flame
three second pause lost
Six-Four Flash, Soft Lockout - flame
three second pause out of sequence sensed
Seven Flash, three Flammable vapor sen-
second pause sor lockout
Eight-One Flash,
FVS fault detected
three second pause
Eight-Two Flash, Temperature sensor
three second pause fault detected
Eight-Three Flash, Electronics fault de-
three second pause tected
Eight-Four Flash,
Valve fault detected
three second pause
CAUTION: Make certain power to water heater is "OFF" before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, remote control, burners, vent connectors or other
safety devices. Refer repairs to qualified service personnel.
PROBABLE CAUSE
Temperature setpoint achieved and
burner is off
Water temperature is below set-
point and burner is on
Pilot tube restriction, carbon build-
up on electrode, pilot wire damage
or gas supply
Pressure switch tube blockage or
faulty pressure switch.
Vent blockage or improper insalla-
tion, switch tube blockage, faulty
switch, blower improper operation
or temperature switch open
Thermal well fault, gas control
fault or tank is not filled with
water
Pilot or burner valve has failed
open
Insufficient gas supply, unstable
pilot, carbon buildup on electrode
or wire/pilot tube damage
Vent blockage or improper instal-
lation, switch tube blockage, faulty
switch, blower improper operation,
blower temperature switch open or
excessive wind at vent termination
Pilot tube restriction, low gas sup-
ply pressure, carbon buildup on
electrode, wire/pilot tube damage
or combustion air port blockage
Valve stuck in open position
Gasoline or other flammable gas
was detected near the appliance or
the sensor has failed
Flammable vapor sensor resistance
is out of range, wiring to FV sen-
sor is faulty or control is faulty
Thermal well fault
Thermal well fault or gas control
fault
Gas control valve needs to be reset
or has been damaged
SOLUTION
No solution required
No solution required
1. Gas supply pressure is low
2. Low voltage supply
3. Pilot replacement
1. Pressure switch wiring incorrect
2. Replace pressure switch
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
1. Reset valve and check for proper
valve cycling
2. Make sure tank is full of water
1. Replace gas valve control
1. Check gas supply
2. Replace pilot
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
6. Check for vent termination compli-
ance as stated in this manual
1. Gas supply pressure is low
2. Jacket air holes obstructed
3. Pilot replacement
1. Replace gas valve control
1. Verify no gasoline or flammable
vapors are present
2. Replace the flammable vapor sensor
1. Replace FV sensor
2. Replace FV sensor wiring
3. Replace gas control valve
1. Check thermal well wiring connec-
tion
2. Replace thermal well
1. Replace gas control valve
2. Replace thermal well
1. Cycle power to gas control valve
2. Replace gas control valve
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