Version date: February 13
th
, 2017
40 Troubleshooting
7
User instructions
HOAF thermHIT® 75M/100M/125M
Chapter 7 - Troubleshooting
Problem
Action
1. Nothing is
happening.
1.
Check that the 12 VDC power supply is present
on the device. If the power supply is present:
• Check that the battery is empty.
• Check the battery to see if it is defective.
• Check the fuse in the operating cabinet to see
if it is defective.
2.
Check whether the ignition key is in the position
'I'.
3.
Check the automatic firing device.
4.
If no solution can be found, please contact the
dealer.
2. Gas is flowing (I
can hear the solenoid
valve opening) but the
spark plug is not
sparking.
1.
Check the distance between the tip of the spark
plug and the outer wall of the burner opening -
this should be approximately 3-4 mm.
Note! Close the gas valve and turn the key
switch to '0' before you check this distance.
2.
Check the spark plug cable for damage.
3.
Check the connection of the spark plug cable
with the spark plug.
4.
Check the connection of the automatic firing
device with the spark plug cable.
5.
Check the spark plug
Method:
• Check the porcelain to see if it is broken.
• Replace the spark plug with a new one.
6.
If no solution can be found, please contact the
dealer.