Cause
The pump is not running.
Remedy
•
Check the power supply.
•
Check the operating periods are according to the needs.
•
Check if the impeller is blocked.
7.5 No instant hot water
No instant hot water.
Cause
The pump is running.
Remedy
•
Check if the return line or pump is air bound (dry running).
•
Check the water heater aggregate.
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