Troubleshooting - Desa SH10E Owner's Manual

TROUBLE-
SHOOTING
102590
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 to
when heater is heater
plugged in.
Fan hitting inside of
heater shell
Heater electrical wiring
improperly connected
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
8 under Ignitor, page 11.
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 current to electrical out-
let. If current 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
necessary.
Relocate wires using wiring
diagram.
Replace fan. See Motor and
Fan, page 10.
Replace motor. See Motor and
Fan, page 10.
Repeat installation and opera-
tion instructions. See Installa-
tion, page 5 and Operation,
page 7.
A) Check ignitor wire. Tighten
or reattach loose ignitor wire.
See Figure 11, page 11 for igni-
tor wire location.
B) Set gap between ignitor
electrode and target plate to
4.3 mm.
C) Tighten nut holding piezo
ignitor to base of heater.
D) Replace ignitor electrode.
See Ignitor, page 11.
This can happen when running
heater in temperatures above
29° C. Run heater in cooler
temperatures.
Check heater inlet and outlet.
Remove any obstructions.
Replace fan. See Motor and
Fan, page 11.
Use only in areas free of
high dust content.
Clean heater. See
Maintenance, page 8.
!
WARNING
9