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34 Value Series Manual
Diagnosc Codes and Remedies
Some of the checks below should be done by a licensed professional. Consumers
should never aempt any acon that they are not qualied to perform.
WARNING
Code Denion Remedy
03 Power interrupon during Bath
Fill (Water will not ow when
power returns).
Turn o all hot water taps. Press ON/OFF twice.
10 Air Supply or Exhaust Blockage
Check that nothing is blocking the ue inlet or exhaust.
Check all vent components for proper connecons.
licensed
professional
only
Ensure approved venng materials are being used.
Ensure vent length is within limits.
Verify dip switches are set properly.
Check fan for blockage.
11 No Ignion
(heater not turning on)
Check that the gas is turned on at the water heater, gas meter, or cylinder.
If the system is propane, make sure that gas is in the tank.
Ensure appliance is properly grounded.
licensed
professional
only
Ensure gas type and pressure is correct.
Ensure gas line, meter, and/or regulator is sized properly.
Bleed all air from gas lines.
Verify dip switches are set properly.
Ensure igniter is operaonal.
Check igniter wiring harness for damage.
Check gas solenoid valves for open or short circuits.
Remove burner cover and ensure all burners are properly seated.
Remove burner plate and inspect burner surface for condensaon or debris.
Check the ground wire for the PC board.
12 No Flame
Check that the gas is turned on at the water heater, gas meter, or cylinder.
Check for obstrucons in the ue outlet.
If the system is propane, make sure that gas is in the tank.
licensed
professional
only
Ensure gas line, meter, and/or regulator is sized properly.
Ensure gas type and pressure is correct.
Bleed all air from gas lines.
Ensure proper venng material was installed.
Ensure condensaon collar was installed properly.
Ensure vent length is within limits.
Verify dip switches are set properly.
Check power supply for loose connecons.
Check power supply for proper voltage and voltage drops.
Ensure ame rod wire is connected.
Check ame rod for carbon build-up.
Disconnect and reconnect all wiring harnesses on unit and PC board.
Check for DC shorts at components.
Check gas solenoid valves for open or short circuits.
Remove burner plate and inspect burner surface for condensaon or debris.
14 Thermal Fuse has acvated
Check for restricons in air ow around unit and vent terminal.
licensed
professional
only
Ensure SW 5 in DIPSW 2 is in the o posion.
Check gas type of unit and ensure it matches gas type being used.
Check for low water ow in a circulang system causing short-cycling.
Ensure dip switches are set to the proper posion.
Check for foreign materials in combuson chamber and/or exhaust piping.
Check heat exchanger for cracks and/or separaons.
Check heat exchanger surface for hot spots which indicate blockage due to scale
build-up. Refer to instrucons in manual for ushing heat exchanger. Hard water
must be treated to prevent scale build up or damage to the heat exchanger.
Measure resistance of safety circuit.
Ensure high re and low re manifold pressure is correct.
Check for improper conversion of product.
16 Over Temperature Warning
(safety shutdown because unit is
too hot)
Check for restricons in air ow around unit and vent terminal.
licensed
professional
only
Check for low water ow in a circulang system causing short-cycling.
Check for foreign materials in combuson chamber and/or exhaust piping.
Check for blockage in the heat exchanger.
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