Desa Air Conditioner - Manual (Page 7)

www.desatech.com 113893-01B 7
POSSIBLE CAUSE
1. No electrical power to heater
2. Fan hitting inside of heater
shell
3. Fan blades bent
4. Defective motor
1. User did not follow installa-
tion or operation instructions
properly
2. No spark at spark plug. To test
for spark, follow step 8 under
Spark Plug, page 9. If you see
spark at spark plug, have heater
serviced by qualified service
person. If no spark seen:
A) Loose or disconnected
spark plug wire
B) Bad spark plug
C) Bad spark transformer
1. Propane supply may be inad-
equate
2. High surrounding air tem-
perature causing thermal limit
device to shut down heater.
3. Restricted air flow
4. Damaged fan
5. Excessive dust or debris in
surrounding area
REMEDY
1. Check voltage to electrical
outlet. If voltage is good,
check heater power cord for
breaks
2. Adjust motor/fan mount to
keep fan from hitting inside of
heater shell. Bend fan mount
if necessary
3. Replace fan. See Fan, page 8
4. Replace motor. See Motor,
page 8
1. Repeat installation and opera-
tion instructions. See Instal-
lation, page 4 and Operation,
page 5
2. A) Check spark plug wire.
Tighten or reattach loose spark
plug wire. See Figure 8, page 9
for spark plug wire location
B) Replace spark plug. See
Spark Plug, page 9
C) Replace spark transformer.
See Spark Transformer, page 9
1. A) Refill tank
B) Provide additional and/or
larger tanks. See Propane
Supply, page 4
2. This can happen when running
heater in temperatures above
85° F (29° C). Run heater in
cooler temperatures
3. Check heater inlet and outlet.
Remove any obstructions
4. Replace fan. See Fan, page 8
5. Clean heater. See Mainte-
nance, page 6
OBSERVED PROBLEM
Fan does not turn when heater
is plugged in
Heater will not ignite
Heater shuts down while run-
ning
TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, connected
to propane supply, operating or hot. Severe burns and electrical
shock can occur.
WARNING: Use only in areas
free of high dust content.