Troubleshooting - Desa 35-FAC Manual Del Propietário

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WARNING: Never service heater while it is plugged in, connected
to propane supply, operating, or hot. Severe burns and electrical
shock can occur.
OBSERVED FAULT
Fan does not turn when heater is
plugged in
Heater will not ignite
Heater shuts down while run-
ning
10

TROUBLESHOOTING

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 ignitor. To test for
spark, follow step 8 under Ig-
nitor, page 9. If you see spark
at ignitor, have heater serviced
by qualified service person. If
no spark seen:
A) Loose or disconnected
ignitor wire
B) Wrong spark gap
C) Piezo ignitor loose
D) Bad ignitor electrode
1. High surrounding air tem-
perature causing thermal limit
device to shut down heater
2. Restricted air flow
3. Damaged fan
4. Excessive dust or debris in
surrounding area
WARNING: Use only in areas
free of high dust content.
www.desatech.com
REMEDY
1. Check voltage to electrical
outlet. If voltage is good,
check heater power cord for
breaks
2. Adjust motor/fan guard to
keep fan from hitting inside of
heater shell. Bend fan guard if
necessary
3. Replace fan. See Fan, page 8
4. Replace motor. See Motor,
page 7
1. Repeat installation and opera-
tion instructions. See Installa-
tion and Operation, page 5
2. A) Check ignitor wire. Tighten
or reattach loose ignitor wire.
See Figure 11, page 8 for
ignitor wire location
B) Set gap between ignitor
electrode and target plate to
.17" (0.43 cm)
C) Tighten nut holding piezo
ignitor to base of heater
D) Replace ignitor electrode.
See Ignitor, page 8
1. This can happen when running
heater in temperatures above
85°F (29.44° C). Run heater
in cooler temperatures
2 Check heater inlet and outlet.
Remove any obstructions
3. Replace fan. See Fan, page 8
4. Clean heater. See Mainte-
nance, page 7
113855-01A

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