Desa TSTA-A(-HA) Benutzerhandbuch

www.desatech.com

56131-F

TROUbLESHOOTING

WARNING: Turn off heater, disconnect power if applicable and

let cool before servicing. Only a qualified service person should

service and repair heater.

CAUTION: Never use a wire, needle, or similar object to clean

pilot. This can damage pilot unit.

Note:

The two most common causes of malfunctioning gas appliances are loose wiring connections

and construction debris clogging pilot and/or control valve filter.
Note:

Before troubleshooting the system make sure gas shut off valve is open.

MILLIVOLT SYSTEM

REMEDY

1. Check to see if you have gas

supply

2. Hold control valve in the

PILOT position for 2 to 3

minutes to purge air. If you

smell gas stop and wait for a

few minutes before trying to

light the fireplace

3. Remove debris and dirt, in-

spect and clean any other

possible obstructions

4. Contact your gas supplier

5. Refer to section on pilot

lighting

6. Have a qualified technician

replace pilot line

7. Replace control valve (see

Replacement Parts and Ac-

cesssories, page 34)

8. Tighten thermocouple or re-

place

1. Check wiring connection. Refer

to Wiring Diagrams, page 33

1. Check electrical connections

2. Re-check problem "Pilot Will

Not Stay Lit"

1. Clean and adjust pilot flame for

maximum flame impingement

on thermopile

1. Replace thermopile

POSSIBLE CAUSE

1. No gas supply, or shutoff valve

is OFF

2. Air in gas line

3. Construction debris clogging

pilot orifice

4. Low gas pressure

5. Control valve knob is not on

the PILOT position

6. Kinked pilot line

7. Bad valve

8. Bad thermocouple or loose

connection

1. Loose wiring on thermopile to

regulator valve. No millivolt

current being sent to regulator

1. Wall switch wires defective

2. Thermopile generator or sensor

not generating sufficient voltage

1. Pilot flame may be too low,

causing safety pilot to “drop

out”

1. Millivolt output on thermopile

too high

PROBLEM

Pilot will not light

Pilot will not stay lit

No gas to burner, although wall

switch and valve are set to the

ON position
Frequent pilot outage

Pilot goes out when wall switch

is on

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product. If they

can’t supply original replacement part(s) call DESA

at 1-866-672-6040 for referral information.

TECHNICAL SERVICE

Continued

When calling DESA, have ready

• model number of your fireplace

• the replacement part number