Spheros Thermo E 320 - Page 30

5 Troubleshooting and error correction Thermo E 200 / 320
504
Table 502: Blinkcode
No. of
impulses
Error Error description
0 Control unit error Control unit error
1 No start within safety period No start within safety period
2 Flame interruption
Flame interruption in burner operation, repeated
starts unsuccessful
3 Low Voltage / high voltage
High voltage (> 30V, at least 6 seconds)
Low Voltage (< 20.5V, 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
9 Circulating pump defective Circulating pump short circuit
10 Overheat protection triggered Overheating T>125°C
11 Electronic ignition unit defective
Electronic ignition unit short circuit
Electronic ignition unit interruption
12 Heater interlock
Flame interruption counter threshold exceeded
Heater interlock - release required
Malfunction counter threshold exceeded