American Water Heater PowerVent, Use & Care Manual

Page: 31 / 36

31
Gas Valve Error Codes
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.
GAS VALVE
LED
STATUS/PROBLEM PROBABLE CAUSE SOLUTION
Short flash once
every four seconds
IDLE (no call for heat,
no fault conditions)
Temperature setpoint achieved and
burner is off
No solution required
“Heartbeat”, alter-
nates bright/dim
Call For Heat (no fault
conditions)
Water temperature is below set-
point and burner is on
No solution required
One Flash, three
second pause
Low flame signal
(control continues to
operate)
Pilot tube restriction, carbon build-
up on electrode, pilot wire damage
or gas supply
1. Gas supply pressure is low
2. Low voltage supply
3. Pilot replacement
Two Flash, three
second pause.
Pressure switch failed
closed
Pressure switch tube blockage or
faulty pressure switch.
1. Pressure switch wiring incorrect
2. Replace pressure switch
Three Flash, three
second pause
Pressure switch failed
open.
Vent blockage or improper insalla-
tion, switch tube blockage, faulty
switch, blower improper operation
or temperature switch open
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
Four Flash, three
second pause
TCO limit lockout
Thermal well fault, gas control
fault or tank is not filled with
water
1. Reset valve and check for proper
valve cycling
2. Make sure tank is full of water
Four Flash, three
second pause
Flame out of sequence Pilot or burner valve has failed
open
1. Replace gas valve control
Six-One Flash,
three second pause Failed trial for ignition
Insufficient gas supply, unstable
pilot, carbon buildup on electrode
or wire/pilot tube damage
1. Check gas supply
2. Replace pilot
Six-Two Flash,
three second pause
Recycle limit - PS/limit
opened
Vent blockage or improper instal-
lation, switch tube blockage, faulty
switch, blower improper operation,
blower temperature switch open or
excessive wind at vent termination
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
Six-Three Flash,
three second pause
Recycle limit - flame
lost
Pilot tube restriction, low gas sup-
ply pressure, carbon buildup on
electrode, wire/pilot tube damage
or combustion air port blockage
1. Gas supply pressure is low
2. Jacket air holes obstructed
3. Pilot replacement
Six-Four Flash,
three second pause
Soft Lockout - flame
out of sequence sensed Valve stuck in open position
1. Replace gas valve control
Seven Flash, three
second pause
Flammable vapor sen-
sor lockout
Gasoline or other flammable gas
was detected near the appliance or
the sensor has failed
1. Verify no gasoline or flammable
vapors are present
2. Replace the flammable vapor sensor
Eight-One Flash,
three second pause FVS fault detected
Flammable vapor sensor resistance
is out of range, wiring to FV sen-
sor is faulty or control is faulty
1. Replace FV sensor
2. Replace FV sensor wiring
3. Replace gas control valve
Eight-Two Flash,
three second pause
Temperature sensor
fault detected
Thermal well fault
1. Check thermal well wiring connec-
tion
2. Replace thermal well
Eight-Three Flash,
three second pause
Electronics fault de-
tected
Thermal well fault or gas control
fault
1. Replace gas control valve
2. Replace thermal well
Eight-Four Flash,
three second pause Valve fault detected
Gas control valve needs to be reset
or has been damaged
1. Cycle power to gas control valve
2. Replace gas control valve