Pwm Circulator Signals - Fujitsu Waterstage Split Comfort 5 Series Installation Manual

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PWM circulator signals

Off
Green On
Green/Red blink
Red blink
Red On
Waterstage Split Comfort DHW Serie / INSTALLATION / 2125 - EN
The pump does not work, no electrical power.
The pump works normally.
Circulation pump operation in "alert" mode
(under unusual conditions such as: dry running, motor overload due to impurities
in the water, etc.).
Operating error due to a persistent external fault
(abnormal voltage/current, external pump blockage, reverse fl ow, etc.).
Circulation pump stops. The circulation pump restarts once the issue is resolved.
Operating error / Permanent shutdown.
Circulation pump replacement.
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