Fault

 

 

 

Lockout

 

 

Code

Description

Cause

 

 

Remedy

 

type

 

Displayed

 

 

 

 

 

 

 

 

 

 

 

E30

Blower Error.

Locked Rotor.

 

 

1.

Check the blower wire harness.

 

 

 

 

Soft

2.

Change the blower.

 

 

 

 

 

3. Change the board.

E33

Water Flow Valve

The water valve did not

 

 

1. Check the water valve wire harness.

 

Closed.

open when attempting to

 

Soft

2. Change the board.

 

 

establish flow.

 

 

3.

Change the water valve.

E34

Proportional Valve

The closed loop control

 

 

Check the proportional gas valve wire

 

(PV) Response

of the proportional valve

 

 

harness, change the board, change

 

Too Slow.

is not functioning properly

 

Soft

the gas valve assembly

 

 

(control error) or the valve

 

 

 

 

 

 

 

 

 

 

 

is responding slowly (valve

 

 

 

 

 

 

failure).

 

 

 

 

E35

Repeated Flame

Low Gas Inlet Pressure.

 

 

Check the flame rod wire harness,

 

Loss Fault.

 

 

 

check line gas pressure. If it is above

 

 

 

 

Soft

5” WC check the flame rod and if it

 

 

 

 

looks dirty, clean it up using isopropyl

 

 

 

 

 

 

 

 

 

 

alcohol and a clean cloth, change the

 

 

 

 

 

flame rod, change the board

E36

Calibration error.

Calibration sequence

 

 

1.

Unplug the power cord, check the

 

 

incomplete because end

 

 

 

DIP switch 4 position and put it in

 

 

of “call-for-heat” during

 

 

 

ON position.

 

 

the calibration time, or

 

 

2.

Increase the set point so that a

 

 

calibration sequence not

 

 

 

“call-for-heat” occurs.

 

 

initiated because of lack of

 

Soft

3.

Drain the tank in order to lower the

 

 

“call-for-heat”, or the unit

 

 

 

water temperature so that a “call-

 

 

has been never calibrated

 

 

 

for-heat” is generated.

 

 

or Calibration is successful

 

 

4.

Set DIP switch 4 to OFF position.

 

 

but DIP switch 4 not set to

 

 

5.

Recalibrate the unit.

 

 

“normal”.

 

 

6.

Change the board.

E37

No Water Flow.

The heater could not start

 

 

1.

Check the water inlet on the heat

 

 

because the water flow was

 

 

 

engine.

 

 

not established. This can be

 

 

2.

Make a water draw during first 60

 

 

caused by an air bubble or a

 

 

 

seconds after putting the unit in ON

 

 

blockage in the heat engine

 

 

 

mode (to evacuate possible air from

 

 

water passage, a failed flow

 

 

 

the heat engine water passage).

 

 

sensor or a failed circulation

 

 

3.

Check wire harness for pump, water

 

 

pump.

 

Soft

 

valve and water flow sensor.

 

 

 

 

 

4. Check the pump 120Vac voltage

 

 

 

 

 

 

supply (the pump shall be energized

 

 

 

 

 

 

during the heating mode).

 

 

 

 

 

5.

Clean or change the water filter.

 

 

 

 

 

6. Change board.

 

 

 

 

 

7. Change pump.

 

 

 

 

 

8. Change water valve.

E99

Board Failure.

An internal diagnostic check

 

Soft

Change the board.

 

 

on the board has failed.

 

 

 

 

 

 

 

 

 

TABLE 5

 

 

 

Lockout types:

 

 

 

 

 

Continuous. Needs “Cycle the Power” or service to restart.

 

 

 

Soft. Will try to automatically recover and restart after 20 minutes.

 

 

 

Auto. Will automatically restart when voltage returns to acceptable parameters.

 

Alert. Will only display an error code in diagnostic mode.

 

 

 

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American Water Heater 316888-004 warranty Fault Lockout Code Description Cause Remedy Type Displayed

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