Troubleshooting - Desa BLP155AT Owner's Manual

TROUBLE-
SHOOTING
10
Never service heater while it is plugged in, connected to
propane supply, operating, or hot. Severe burns and
electrical shock can occur.
OBSERVED FAULT POSSIBLE CAUSE
Fan does not turn No electrical power
when heater is to heater
plugged in.
Fan hitting inside of
heater shell
Fan blades bent
Defective motor
Heater will not
User did not follow instal-
ignite.
lation or operation in-
structions properly
No spark at ignitor. To
test for spark, follow step
9 under Ignitor, page 13.
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
Heater shuts down
High surrounding air tem-
while running.
perature causing thermal
limit device to shut down
heater.
Restricted air flow
Damaged fan
Excessive dust or debris
in surrounding area
!
WARNING
REMEDY
Check voltage to electrical out-
let. If voltage is good, check
heater power cord for breaks.
Adjust motor/fan guard to keep
fan from hitting inside of heater
shell. Bend fan guard if neces-
sary.
Replace fan. See Fan, page 12.
Replace motor. See Motor,
page 11.
Repeat installation and opera-
tion instructions. See Installa-
tion, page 6 and Operation,
page 7.
A) Check ignitor wire. Tighten
or reattach loose ignitor wire.
See Figure 13, page 13 for igni-
tor wire location.
B) Set gap between ignitor
electrode and target plate to
.17".
C) Tighten nut holding piezo
ignitor to base of heater.
D) Replace ignitor electrode.
See Ignitor, page 13.
This can happen when running
heater in temperatures above
85 F. Run heater in cooler tem-
peratures.
Check heater inlet and outlet.
Remove any obstructions.
Replace fan. See Fan, page 12.
Clean heater. See Mainte-
nance, page 9.
Use only in areas free of
high dust content.
!
WARNING
100585