504
Thermo E+ 120/200/320
5 Troubleshooting
Table 502 Flash code
No. of
impulses
Error
Error description
0
Control device error
Control device error
1
No start within safety period
No start within safety period
2
Flame interruption
Flame interruption in burner operation, repeated
start unsuccessful
3
Low Voltage / high voltage
High voltage (> 30V [15V]), at least 6 seconds)
Low Voltage (< 20.5V [10V]), at least 20 seconds)
4
Extraneous light in initial or purge cycle
Extraneous light (flame detector "Bright" in purge
cycle 2)
Extraneous light (flame detector "Bright" prior to
ignition)
5
Flame detector defective
Flame detector short circuit
Flame detector interruption
6
Temperature sensor / overheat protection
defective
Temperature sensor short circuit
Temperature sensor interruption
Temperature sensor / overheat protection
non-plausible
Overheat protection short circuit
Overheat protection interruption
7
Solenoid valve defective
Solenoid valve short circuit
Solenoid valve interruption
8
Combustion air fan motor / nozzle block preheater
defective
Combustion air fan motor short circuit
nozzle block pre-heater short circuit or the wrong
one installed
9
Circulating pump defective
Circulating pump short circuit
10
Overheat protection triggered
Overheating T>140°C
11
Electronic ignition unit defective
Electronic ignition unit short circuit
Electronic ignition unit interruption
12
Heater lock-out
Flame interruption counter threshold exceeded
Heater lock-out - release required
Malfunction counter threshold exceeded
Summary of Contents for Thermo E+ 120
Page 64: ...memos...
