Alarm conditions:
6B - Heater overheat (TK70)
7B - Heater radiator overheat (TK60)
8B - Heater(Zone1) overheat (TK70)
9B - Heater(Zone1) radiator overheat (TK60)
10B - Heater(Zone2) overheat (TK70)
11B - Heater(Zone2) radiator overheat (TK60)
Possible causes:
- Overheating protection activated,
- Overheating protection failure,
- Damaged/wrong wiring,
- Controller failure.
Troubleshooting:
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