Grundfos COMFORT 10-16 Temperature control - No Instant Hot Water (Pump Running)

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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