Munchkin Gas-Fired Hot Water Boiler manual Munchkin Error Code, Boiler Error, Boiler Fault

GAS-FIRED BOILER Boiler Manual

PART 14: TROUBLESHOOTING

A. MUNCHKIN ERROR CODE

An error code may occur in the installation of the Munchkin. This condition may lead to a lock out condition of the controller, which will need to be manually reset through the S4/Reset but- ton. These temporary codes will help the installer correct the problem before going into a lock out condition, which will require a manual reset.

B.BOILER ERROR

1.When an error condition occurs the controller will display an error code on the display module.

2.These error codes and several suggested corrective actions are included in Table 14-1.

3.In the case of E00, E13, and E14 this error, if uncorrected, will go into a fault condition as described is Paragraph C (Boiler Fault).

C.BOILER FAULT

WARNING

When servicing or replacing any components of this boiler be certain that:

•The gas is off.

•All electrical power is disconnected

DANGER

When servicing or replacing that are in direct contact with the boiler water, be certain that:

•There is no pressure in the boiler. (Pull the release on the relief valve. Do not depend on the pressure gauge reading).

•The boiler water is not hot

•The electrical power is off

WARNING

Do not use this appliance if any part has been under water. Improper or dangerous operation may result. Contact a qualified service technician immediately to inspect the boiler and to repair or replace any part of the boiler which has been under water.

1.When a fault condition occurs the controller will illuminate the red “fault” indication light and display a fault code in the format (Example: F00) on the display module.

2.Note the fault code and refer to Table 14-2 for an explanation of the fault code along with several suggestions for corrective actions.

3.Press the reset key to clear the fault and resume operation. Be sure to observe the operation of the unit to prevent a recurrence of the fault.

Table 14-1 : 925 Control Board ERROR Codes

CAUTION

This appliance has wire function labels on all internal wiring. Observe the position of each wire before re- moving it. Wiring errors may cause improper and dan- gerous operation. Verify proper operation after servicing.

CAUTION

If overheating occurs or the gas supply fails to shut off, do not turn off electrical power to the circulating pump. This may aggravate the problem and increase the likelihood of boiler damage. Instead, shut off the gas supply to the boiler at the gas service valve.

Code	Description	Duration		Corrective Action
			1.	Check circulation pump operation.
			2.	Assure that there is adequate flow through the boiler
E00	High Limit Exceeded	50 Sec.		by accessing the status menu and assuring that there
				is less than a 50°F rise from the return thermister to
„
				the supply thermister.
			3.	Replace switch if faulty.
	Combustion Fan Speed Low.The boil-		1.	Check the combustion air fan wiring.
E13	er combustion air fan speed less	60 Sec.	2.	Replace the combustion air fan.
„	than 70% of expected.		3.	Replace the control board.
	Combustion Fan Speed High. The		1.	Check the combustion air fan wiring.
E14	boiler combustion air fan speed is	60 Sec.	2.	Replace the combustion air fan.
„	more than 130% of expected.		3.	Replace the control board.
PR0	WaterPressure Switch Open	Until	1.	Assure that the system pressure is above 10 psig.
		Corrected	2.	Check for leaks in the system piping.
„
		Until	1.	Assure that the vent is not blocked
FLU	Blocked Vent Pressure Switch Open		2.	Check the switch operation by applying a jumper. (If
		Corrected
„				the switch is not functioning properly, replace it.)

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