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Errors


Boiler type CHS-155

Error code Lockout 138

Cause:

Flame too low.

1. Blocked venting. 
2. Fowled or faulty flame sensor.

Solution:

1. Check for blockage of the exhaust-vent, Air-inlet, combustion blower, gas valve venturi, heat exchanger etc. 
2. Inspect flame sensor for cracks of fowling, clean or replace as necessary.