Malfunctions
Thermo H
75
The meaning of the number of long pulses is shown in the table below.
15.3. Control head AC/DC
Consider the safety regulations in 3.1.
If there are any faults, proceed as follows:
Switch off the heater and then switch it on again. If the heater doesn‘t
start, check the following:
– Are the fuses ok?
– Is the insulation monitor or the earth leakage circuit breaker in order
and correct configured?
– Is the high-voltage mains connected?
– Are the electrical connections and cables in order?
No. of
long
pulses
Description of malfunction
0
not used
1
No start within the safety time
2
Flame interruption, restart failed
3
Low voltage / overvoltage
4
Extrinsic light before starting or within the purge cycle
5
not used
6
Temperature sensor / overheat protection defective
7
Solenoid valve defective
8
Combustion air fan motor / control device defective
9
Circulating pump defective
10
Overheat protection has been activated
11
Electronic ignition unit defective
12
Heater fault lock-out - deactivation necessary
13
not used
14
not used
15
Revolution signal faulty
High voltage! Danger to life!
Warning!
Summary of Contents for Thermo H
Page 85: ...memos ...
