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Errors


Boiler type E50C

Error code E18

Cause:

Signal maximum flow water temperature exceeded  (T1 >212°F).

 

Solution:

Check actual flow temperature. suddenly increase caused by completely hydraulic  shut off of the boiler (fi lter, pump, thermostat valve, service valve)

Check fl ow sensor NTC1. measure the resistance value  (see Appendix B)

Exchange defective part if necessary. Change control unit when error persists.