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34
6.7 Failure code table for general PCB (single-system)
Wire
controller
Protection
/
Failure
Check
Solution
PP01/PP1
Inlet water temp. sensor failure
1. Check the connection of inlet water
sensor.
2. Check if the sensor is broken.
1. Reconnect the sensor.
2. Replace the sensor.
PP02/PP2
Outlet water temp. sensor failure
1. Check the connection of outlet water
sensor.
2. Check if the sensor is broken.
1. Reconnect the sensor.
2. Replace the sensor.
PP03/PP3
Coil temp. sensor failure
1. Check the connection of coil
temperature sensor.
2. Check if the sensor is broken.
1. Reconnect the sensor.
2. Replace the sensor.
PP05/PP5
Ambient temp. sensor failure
1. Check the connection of ambient
temperature sensor.
2. Check if the sensor is broken.
1. Reconnect the sensor.
2. Replace the sensor.
PP06/PP6
Protection for excessive temp.
difference between water inlet &
outlet
1. Check if there is any blockage in the
water circuit.
2. Check if the water flow volume is
enough. 3. Check if the water pump is
working.
1. Remove the cause of the
blockage.
2. Increase the water flow
volume.
3. Repair or replace the water
pump.
PP07/PP7
Anti-freeze protection for
cooling
Refer to PP06.
Refer to PP06.
PP07/PP7
Winter anti-freeze protection
Ⅰ
No action required
PP07/PP7
Winter anti-freeze protection
Ⅱ
No action required
EE01/EE1
High pressure protection
1. Check if high pressure switch is
broken
2. Check if there's a blockage in the
water circuit or if water flow is not
enough.
3. Check if refrigerant circuit jam.
1. Replace with new high
pressure switch.
2. Fill up with enough
refrigerant.
3. Remove cause of blockage or
increase water flow.
4. Send heat pump to dealer for
detailed check.
EE06/EE6
Low pressure protection
1. Check if low pressure switch is
broken.
2. Check if refrigerant level is low.
3. Ambient temp. and water inlet temp.
is too low.
1. Replace with new low
pressure switch.
2. Fill up with enough
refrigerant.
3. Send heat pump to dealer for
detailed check.
EE03/EE3
Water flow switch failure
1. Check if wiring connection of flow
switch is in correct position.
2. Check if there is enough water flow.
3. Check if flow switch is broken.
4. Check if water pump is working.
1. Reconnect the wiring.
2. Increase water flow.
3. Replace flow switch.
4. Repair or replace water pump.
EE04/EE4
Order of phases incorrect (only
for 3 phase model)
Order of phases incorrect
Reconnect the phases in right
order.
EE05/EE5
Failure of excessive temp.
difference between water inlet &
outlet
1. Check if there is enough water flow
volume.
2. Check if inlet / outlet water temp.
sensor is working.
1. Increase water flow.
2. Replace sensor.
Содержание AC10P
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Страница 9: ...9 1 7 Connecting the by pass...
Страница 20: ...20 6 Maintenance and Inspection...
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Страница 26: ...26 6 1 Maintenance...
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