Trouble Shooting Continued
Corrective Action
Adjust pilot and clean if required.
Check switch wires.
Check thermocouple millivolts
Check termination location and make sure it is not
subject to adverse environmental conditions.
Check thermocouple voltage from start up. If millivolts
drop dramatically, it is an indication that the pilot is lifting.
Check the vent is correctly attached.
Check aeration setting.
Check that venting is correctly attached.
Check electrical supply to unit.
Check for correct positioning of the snap switch. You can
short out the snap disk to check it’s operation.
Check all electrical connections are secure.
Short out speed controller to check for defective
operation
Check terminals on speed controller. If you have
120VAC the blower motor is defective..
Possible Cause
Pilot adjusted too low
Switch wires may be
grounding out
Thermocouple worn
Adverse wind conditions
Pilot flame of thermocouple
Incorrect aeration
adjustment.
Incorrect venting
I
No power supply
Thermal snap switches
loose or defective
Loose electrical connection
Defective speed controller
Defective blower
Problem
Frequent pilot
outage problems
The main burner
shuts off when the
appliance is warm.
Excessive soot on
burner or logs.
Convection blower
(if installed) does not
operate.
Maintenance
For maintenance, proper re-assembly and resealing of the venting system is required.
Valve Plate Assembly Removal
-Remove door assembly
-Remove log set
-Disconnect gas supply
-Disconnect all electrical leads (label leads prior to removal)
-Remove the screws that hold the valve plate assembly
-Carefully lift out the assembly
Fan Assembly
A fan assembly is available for the model MB-36. For details on fan installation and service, see separate
documentation supplied with a the fan kit.
Venting System
The appliance should be inspected before use and at least annually by a professional service person.
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