Troubleshooting - Desa (V)KC42NE series Owner's Operation And Installation Manual

VENTING SYSTEM
Conduct annual inspection of the venting
system following these guidelines:
1. Check areas of venting system that are
exposed to the weather for corrosion (rust
spots or streaks and, in extreme cases,
holes). Have these items replaced im-
mediately by a qualified service person.
2. Remove the vent cap and shine a flashlight
into the vent. Remove any foreign material.
WARNING: Turn off heater and let cool before servicing. Only a
qualified service person should service and repair heater.
CAUTION: Never use a wire, needle or similar object to clean
pilot. This can damage pilot unit.
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM
Ignitor will not spark or pilot
will not light
116240-01J
CLEANING AND MAINTENANCE

TROUbLEShOOTING

pOSSIBLE CAUSE
1. No gas supply or shutoff
valve is OFF
2. Air in gas line
3. Construction debris clog-
ging pilot orifice
4. Low gas pressure
5. Kinked pilot line
6. Control valve is not open-
ing
7. No power to unit or ignition
module or power trans-
former is bad
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Continued
3. Check for evidence of excessive condensa-
tion. Continuous condensation can cause
corrosion of caps, pipes and fittings and can
be caused by having excessive lateral runs,
too many elbows or exterior portions of the
system being exposed to cold weather.
4. Inspect joints to verify that no pipe section
or fitting has been disturbed and loos-
ened. Check mechanical supports such
as wall straps for rigidity.
REMEDY
1. Check to see if you have gas
supply and that equipment
shutoff valve is opened
2. Repeat lighting procedure
several times to purge all air
out of lines. If after repeated
attempts appliance does
not light, call for qualified
service and repair
3. Remove debris and dirt,
inspect and clean any other
possible obstructions
4. Contact your gas supplier to
check pressure
5. Have a qualified technician
replace pilot line
6. Replace control valve (Re-
fer to Replacement Parts,
page 34)
7. Check that main power is
on and that all wire connec-
tions are made correctly to
ignition model (see Wiring
Diagram, page 27). Check
for 24 VAC at secondary
side of transformer. If 24
VAC is present and module
does not operate, have
module replaced otherwise
have transformer replaced
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