Desa MPF24VPA, MPF18VPA, MPF18VNA Troubleshooting, Observed Problem, Possible Cause, Remedy

Models: MPF18VNA MPF24VPA MPF18VPA

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TROUBLESHOOTING

TROUBLESHOOTING

OBSERVED PROBLEM WARNING: Turn off appliance and let cool before servicing. Only a qualified service person should service and repair heater.

POSSIBLE CAUSE CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

When ignitor button is pressed,

1. Ignitor electrode not con-

1.

Reconnect ignitor cable

there is no spark at ODS/pilot

 

nected to ignitor cable

 

 

 

2.

Ignitor cable pinched or

2.

Free ignitor cable if pinched

 

 

wet

 

by any metal or tubing. Keep

 

 

 

 

ignitor dry

 

3.

Broken ignitor cable

3.

Replace ignitor cable

 

4.

Bad piezo ignitor

4.

Replace piezo ignitor

 

5.

Ignitor electrode positioned

5.

Replace pilot assembly for

 

 

wrong or broken

 

remote-ready units

When ignitor button is pressed in there is spark at ODS/pilot but no ignition

1.Gas supply turned off or equipment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when in- stalled

5.Depleted gas supply (pro- pane/LP only)

6.ODS/pilot is clogged

7.External gas regulator setting is incorrect

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down con- trol knob. Repeat igniting op- eration until air is removed

5.Contact local propane/LP gas company

6.Clean ODS/pilot (see Cleaning and Maintenance, page 12) or replace ODS/pilot assembly

7.Replace gas regulator

114925-01C

www.desatech.com

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Desa MPF24VPA, MPF18VPA, MPF18VNA installation manual Troubleshooting, Observed Problem, Possible Cause, Remedy