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Errors


Boiler type Q130SN

Error code E18

Cause:

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

 

Solution:

Check actual fl ow 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