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5 2 ways vale is close.
6 Indoor water pump control:
o Indoor water pump always turn ON if room heat pump thermo ON OR Tank thermo ON.
12.1.12 Outdoor Fan Motor Operation
Outdoor fan motor is adjusted according to operation condition. It starts when compressor starts operation and it
stops 30 seconds after compressor stops operation.
stops 30 seconds after compressor stops operation.
30 sec
Compressor:
ON
ON
Fan Speed
ON
ON
OFF
OFF
Outdoor Fan:
12.2 Water Pump
12.2.1 Water Pump Control
Once the indoor unit is ON, the water pump will be ON immediately and no error judgment for 70 seconds.
However, during this 70 seconds operation, if there is any abnormality cause at outdoor or malfunction, the
compressor should be OFF immediately and restart delay after 3 minutes.
compressor should be OFF immediately and restart delay after 3 minutes.
The system will start checking on the water flow level after operation start for 70 seconds. If water flow level is
detected low continuously 60 seconds, the water pump and the compressor will be OFF permanently and
OFF/ON control panel LED will blink (H62 error occurs).
OFF/ON control panel LED will blink (H62 error occurs).
When error happens, the power has to be reset to clear the error.
If there is no error indication, the water pump shall be continuously running.
The water pump will remain ON when compressor OFF due to thermostat OFF setting is reached.
Water pump will OFF when room thermo OR tank thermo OR buffer tank thermo OFF.
Water pump will delay 15 seconds to turn OFF when request to OFF except during anti-freeze deice activate or
air purge mode.
Pump ON Request
YES
NO
NO
YES
ON Water Pump
OFF Water Pump
Pump ON Time
≥ 70 Sec?
YES
Water Flowrate Abnormal
> 15 Sec?
H62 Error Display
at Remote Controller
Maximum pump speed setting on remote control
Standard pump speed is automatically controlled to get the designed water temperature different between water
inlet and outlet (∆T). Instead of setting the standard pump speed, maximum pump speed is manually adjusted by
the installer according to water circuit pressure drop.
the installer according to water circuit pressure drop.
However, the following sequences do not follow maximum pump duty setting by remote control.
Pump
down
mode
Air purge mode
Normal
deice
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