Technical data

0803UDSA-2GBEN, Pag. 33/36

25. Trouble-

The integrated control relay monitors the operation of the heater. If the

heater fails to operate properly, review the flow chart below and see the

operating sequence in section 16.

The general troubleshooting charts on the following pages will also help

you to determine the problem.

Control relay

Troubleshooting flowchart

24. Flue and

combustion

air piping

Check the complete system at least once a year. Inspection should include

all joints, seams, concentric adapters and the flue terminal cap. Replace

any defective or heavily corroded parts.

shooting

YES NO

YES

Trial for ignition

Call for heat

s there a

spark across

ap at i

niter?

Is there line

volta

e at spark

niter?

Check connection at spark

igniter

Replace igniter

Is there line

voltage to the

control relay?

Replace control

relay

Check wiring

connections