Desa HDVF3018N, HDVF3018P Troubleshooting, Observed Problem, Possible Cause, Remedy

Models: HDVF3018N HDVF3018P

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Troubleshooting

Troubleshooting

OBSERVED PROBLEM WARNING: Turn off heater 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

2.

nected to ignitor cable

2.

Free ignitor cable if pinched

 

 

Ignitor cable pinched or wet

 

 

 

 

 

by any metal or tubing. Keep

 

 

3.

Piezo ignitor nut is loose

3.

ignitor cable dry

 

 

Tighten nut holding piezo ignitor

 

 

 

 

 

to base panel of log set. Nut is

 

 

4.

Broken ignitor cable

4.

located behind base panel

 

 

Replace ignitor cable

 

 

5.

Bad piezo ignitor

5.

Replace piezo ignitor

 

 

6.

Ignitor electrode broken

6.

Replace pilot assembly

 

 

7. Ignitor electrode positioned wrong

7.

Replace pilot assembly

 

When ignitor button is pressed,

1. Gas supply turned off or equip-

1.

Turn on gas supply or open

 

there is spark at ODS/pilot but

 

ment shutoff valve closed

2.

equipment shutoff valve

no ignition

2. Control knob not in PILOT

Turn control knob to PILOT

 

 

3.

position

3.

position

 

 

Control knob not pressed in

Press in control knob while in

 

 

4.

while in PILOT position

4.

PILOT position

 

 

Air in gas lines when in-

Continue holding down con-

 

 

 

stalled

 

trol knob. Repeat igniting op-

 

 

5.

Depleted gas supply (propane/

5.

eration until air is removed

 

 

Contact local propane/LP gas

 

 

6.

LP only)

6.

company

 

 

ODS/pilot is clogged

Clean ODS/pilot (see Cleaning

 

 

 

 

 

and Maintenance, page 19) or

 

 

7. Gas regulator setting is not

7.

replace ODS/pilot assembly

 

 

Replace gas regulator

 

 

 

correct

 

 

 

 

ODS/pilot lights but flame

1. Control knob not fully pressed in

1.

Press in control knob fully

 

goes out when control knob is

2. Control knob not pressed in

2.

After ODS/pilot lights, keep con-

released

3.

long enough

3.

trol knob pressed in 30 seconds

 

 

Equipment shutoff valve not

Fully open equipment shutoff

 

 

4.

fully open

4.

valve

 

 

Pilot flame not touching ther-

A) Contact local propane/LP

 

 

 

mocouple, which allows ther-

 

or natural gas company

 

 

 

mocouple to cool, causing

 

B) Clean ODS/pilot (see

 

 

 

pilot flame to go out. This

 

 

 

 

problem could be caused by

 

Cleaning and Maintenance,

 

 

 

one or both of the following:

 

page 19) or replace ODS/pilot

 

 

 

A) Low gas pressure

 

assembly

 

 

 

B) Dirty or partially clogged

 

 

 

 

 

 

5.

ODS/pilot

5.

Hand tighten until snug, then

 

 

Thermocouple connection

 

 

6.

loose at control valve

6.

tighten 1/4 turn more

 

 

Thermocouple damaged

Replace pilot assembly

 

 

7.

Control valve damaged

7.

Replace control valve

119421-01A

www.desatech.com

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Desa HDVF3018N, HDVF3018P installation manual Troubleshooting, Observed Problem, Possible Cause, Remedy