TROUBLESHOOTING

Continued

OBSERVED FAULT

POSSIBLE CAUSE

SOLUTION

 

 

 

 

The fan comes on but the

1. Ignitor is not functioning

1.

A) Check the connections

flame does not light or does

 

 

of the ignition cables to the

not remain lit

 

 

electrodes and transformer

 

 

 

B) Check the position of the

 

 

 

electrodes and the distance

 

 

 

between them, in accordance

 

 

 

with the diagram on page 7

 

 

 

C) Check that the electrodes

 

 

 

are clean

 

 

 

D) Replace the ignition

 

 

 

transformer

 

2. Faulty flame control

2.

Replace the flame control

 

3. Non-functioning photoelectric

3.

Clean or replace the photo-

 

cell

 

electric cell

 

4. Fuel is not reaching the burner

4.

A) Check that the connection

 

or a sufficient amount is not

 

between the pump and the

 

arriving

 

motor is intact

 

 

 

B) Check that air has not fil-

 

 

 

tered into the fuel circuit, check

 

 

 

the tubes and the filter seal

 

 

 

C) Clean or, if necessary,

 

 

 

replace the nozzle

 

5. Solenoid valve is not working

5.

A) Check the electrical con-

 

 

 

nection

 

 

 

B) Check the LI thermostat

 

 

 

C) Clean or, if necessary,

 

 

 

replace the solenoid valve

 

 

 

 

The fan comes on and the flame

1. Insufficient air for combustion

1.

A) Remove anything block-

lights, but produces smoke

 

 

ing or obstructing the aspira-

 

 

 

tion and/or airflow ducts

 

 

 

B) Check the position of the

 

 

 

air regulation ring

 

 

 

C) Clean the burner disc

 

2. Too much air for combustion

2.

Check the position of the air

 

3. Fuel is dirty or contains water

 

regulation ring

 

3.

A) Replace the fuel with

 

 

 

clean fuel

 

 

 

B) Clean the fuel filter

 

4. Air has filtered into the fuel

4.

Check the condition of the

 

circuit

 

tubes and the seal of the fuel

 

5. Inadequate quantity of fuel in

 

filter

 

5.

A) Check the pump pressure

 

burner

 

B) Clean or replace the nozzle

 

6. Too much fuel in burner

6.

A) Check the pump pressure

 

 

 

B) Replace the nozzle

 

 

 

 

The heater does not turn off

 

1.

Replace the solenoid valve

 

 

 

 

The fan does not switch off

1. Faulty fan thermostat

1.

Replace the FA thermostat

6

www.desatech.com

114909-01A

Page 5 Page 7
Page 6
Image 6
Desa 280-IF Fan comes on but Ignitor is not functioning, flame does not light or does, Not remain lit, Are clean, Nection
Page 5 Page 7

160-IF, 280-IF specifications

Desa 280-IF and Desa 160-IF are innovative and advanced models in the world of water heaters. These devices are designed to provide efficient heating solutions for residential and commercial needs, ensuring dependable performance and energy savings. Both models are equipped with a range of cutting-edge technologies and features that set them apart from traditional water heating systems.

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