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12.1.8 Auto Cooling Mode Operation Limit
Outdoor Ambient
Temperature
16°C
19°C
Compressor
ON
Compressor
OFF
Auto Mode Cooling Only operation will start once the outdoor ambient temperature reaches 19°C and
compressor will continue to run until the outdoor ambient temperature drops to 16°C.
Due to this limitation,
If Heat to Cool temperature is set lower than 19°C, the compressor will not operates until the outdoor
ambient temperature reaches 19°C or higher.
12.1.9 Tank Mode Operation
3 ways valve direction
o 3 ways valve switch to tank side during Tank Thermo ON condition. Switch 3 ways valve to room side
when tank achieve Tank Thermo OFF temperature.
Tank Thermo ON/OFF Characteristic
o Tank Thermo OFF
Case 1: Internal Tank Heater is select and Tank Heater ON
a) Tank temperature > Tank Set Temperature continuously for 15 seconds.
b) Water outlet >75°C
Case 2: Tank Heater OFF OR External Heater is select
a) When heat pump OFF due to water thermos & Tank temperature > Tank water set temperature for
continuously 20 seconds. OR
b) Tank temperature > Tank set temperature + 1°C for continuously 20 seconds.
o Tank Thermo ON
Case 1: Internal Tank Heater is select and Tank Heater ON
a) Tank temperature < Tank set temperature + R/C (Tank re-heat temperature)
Case 2: Tank Heater select OFF OR External Heater is select
a) Tank temperature < Tank water set temperature + R/C (Tank re-heat temperature)
* When tank thermo ON, water pump will ON for 3 minutes then only heat pump turn ON.
*Tank water set temperature = tank set temperature or 51°C whichever lower.
2 ways valve close
Heat pump Thermostat Characteristic
o Heat pump Water Outlet set temperature is set to below table:
Outdoor ambient temperature Heat pump water outlet temperature
< 5°C 55°C
> 5°C 57°C
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