Panasonic WH-UD05JE5 Service Manual page 140

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Zone 1 and Zone 2 water pump start condition:
Zone room request ON
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(eg. Zone 1 thermo ON, only zone 1 pump will turn ON)

Zone 1 and Zone 2 water pump stop condition:
Zone room request OFF
o

Pool water pump start condition:
Pool Zone request ON AND
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Pool function is selected
o

Pool water pump stop condition
Pool zone: Zone room request OFF OR
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Pool function is cancel
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* Zone 1 & Zone 2 water pump need to turn OFF when antifreeze deice pump stop control activate and turn
ON back after the antifreeze deice pump stop control end under setting of "NO" buffer tank connection.
Zone Pump Prohibit ON control:

Start condition:
Zone 1 water temperature ≥ 75°C continuously for 5 minutes
*stop zone water pump operates if the zone water fulfilled.
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Cancel condition:
After 30 minutes from start condition fulfilled.
*zone water pump operates according to normal condition.
Zone Pump Control during Anti-Freeze
Zone pump control during Zone Anti-Freeze Control:
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When Zone Anti-Freeze Flag=1, Zone Pump Turn ON.
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When Zone Anti-Freeze Flag=0, Zone Pump Turn OFF.
Zone pump control during Indoor Anti-Freeze Control:
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Zone pump only ON/OFF if the Extension PCB connected and Buffer Tank select "NO" condition
When Indoor Anti-Freeze flag=1, Zone Pump Turn ON
When Indoor Anti-Freeze flag=0, Zone Pump Turn OFF
* Pool Water Pump will not affected by both Indoor anti-freeze control or zone anti-freeze control.
14.2.3 Water Pump Speed Feedback Error
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Basically pump speed feedback is control by micon.
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When pump speed is below low limit or over high limit for a few seconds, micon detect pump error and system is
stopped.
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Error detection conditions:
Detect abnormal water pump speed for continuous 10 secs.
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Current pump speed < 700 rpm or
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Current pump speed > 6000 rpm for 10 seconds.
o

Control contents:
When error occurs, water pump, heating and heater is stopped for 30 seconds then restart again (Retry
o
control).
When micon detect error again, system is stopped and error code [H20] is displayed at control panel.
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