Desa BLP35ES owner manual Trouble- Shooting, Observed Fault, Possible Cause, Remedy, nance, page

Models: BLP35ES

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TROUBLE- SHOOTING

TROUBLE- SHOOTING

!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

POSSIBLE CAUSE

REMEDY

Fan does not turn

No electrical power

Check current to electrical out-

when heater is

to heater

let. If current is good, check

plugged in.

 

heater power cord for breaks.

 

Fan hitting inside of

Adjust motor/fan guard to keep

 

heater shell

fan from hitting inside of

 

 

heater shell. Bend fan guard if

 

 

necessary.

 

Fan blades bent

Replace fan. See Fan, page 11.

 

Defective motor

Replace motor. See Motor,

 

 

page 10.

 

 

 

Heater will not

User did not follow instal-

Repeat installation and opera-

ignite.

lation or operation in-

tion instructions. See Installa-

 

structions properly

tion, page 5 and Operation,

 

 

page 6.

 

No spark at ignitor. To

A) Check ignitor wire. Tighten

 

test for spark, follow step

or reattach loose ignitor wire.

 

9 under Ignitor, page 12.

See Figure 13, page 12 for igni-

 

If you see spark at ignitor,

tor wire location.

 

have heater serviced by

B) Set gap between ignitor

 

qualified service person.

electrode and target plate to 4.3

 

If no spark seen:

mm.

 

A) Loose or disconnected

C) Tighten nut holding piezo

 

ignitor wire

ignitor to base of heater.

 

B) Wrong spark gap

D) Replace ignitor electrode.

 

C) Piezo ignitor loose

See Ignitor, page 12.

 

D) Bad ignitor electrode

 

 

 

 

Heater shuts down while running.

High surrounding air tem- perature causing thermal limit device to shut down heater.

Restricted air flow

Damaged fan

Excessive dust or debris in surrounding area

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 Fan, page 11.

!WARNING

Use only in areas free of high dust content.

Clean heater. See Mainte-

nance, page 8.

9

 

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Desa BLP35ES Trouble- Shooting, Observed Fault, Possible Cause, Remedy, tion, page 5 and Operation, nance, page