swimmax 07iPS, User And Service Manual, Page: 30 / 50

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Water pump running logic and error code EE03 or ‘ON’.
There are two options for water pump running.
Option 1:Water pump starts or stops in relation to heat pump operation.
Water pump starts 60s before compressor, water pump start 30s and then detect the water flow switch. When the heat
pump meet the requirement of standby mode, water pump will stop 5mins after compressor stops. Water flow switch
won’t be detected in 1H standby of heat pump. Even if the water flow switch is manually removed, the EE03/ON
error will not be reported. Water pump will restart to running for 5mins to check the water temp. when the standby
time is over 1 hours.
HP working mode
Condition
(Tset:Setting water temp.
T1: Inlet water temp.)
Example:
Tset = 28℃,
Water pump working logic
Heating mode
T1>=Tset-0.5,
and last for 30 min
T1>=27.5
℃
,
last for 30 minutes
If heat pump enter standby mode for 1
hours, water Pump will start 5mins to
check whether T1>Tset-1 ,if so,heat
pump will go into standy again.
If T1<=Tset-1,heat pump will restart.
Cooling mode
T1<=Tset+0.5,
And last for 30 min
T1<=28.5
℃
,
last for 30 minutes
If heat pump enter standby mode for 1
hours, water Pump will start 5mins to
check whether
T1<Tset+1,if so,heat
pump will go into standy again.
If T1>=Tset+1,heat pump will
restart.
In this case, it is unnecessary to deal with Error code ‘ON’ if ‘ON’ occurs in 1 hours standby period.
Option 2
No matter when the heat pump is on (running or standby), water pump will always be running.
Water pump will run for 1 minute after manually turn off.