www.desatech.com
104787-01D
7
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
1. Repeat installation and operation
instructions. See
Installation
,
page 4 and
Operation
, page 5
2. A) Check ignitor wire. Tighten
or reattach loose ignitor wire.
B) Assure gap between ignitor
electrode and target plate is
0.17" (4.3 mm). Do not bend
electrode. Doing so may cause
it to break
C) Tighten nut holding piezo
ignitor to base of heater
D) Replace ignitor electrode.
See
Ignitor
, 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
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. 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
OBSERVED FAULT
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.
TECHNICAL SERVICE
You may have further questions about this heater.
If so, contact DESA Heating Productsʼ Technical
Service Department at 1-866-672-6040. When
calling, please have your model and serial numbers
of your heater ready.
You can also visit DESA Heating Productsʼ Techni-
cal Service web site at
www.desatech.com
.
ACCESSORY
Purchase accessories and parts from your near-
est dealer or service center. If your dealer or
service center can not supply an accessory or
part, call DESA Industriesʼ Parts Department at
1-905-826-8010. You can also write to the ad-
dress listed on the back page of this manual.
LPA4020 - Fuel Gas Connector
Connects regulator to all standard propane tanks.
U.L. and AGA
