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Errors


Boiler type Q95M-200

Error code E30

Cause:

Temp difference between supply & return, indicated by blocking code b30, was too large for 20 successive times. Non adjustable default Max Delta set to 100°F

Solution:

1. Inspect supply & return water sensors for proper resistance.
2 Inspect piping for proper configuration. For example, when used in a radiant heating application.