Hisense AHM-080HCDSAA - Initial Start-Up at Low Outdoor Ambient Temperatures; Heater Operation During SWP; Heater Operation During Defrosting

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Control function
10.5.3 Initial Start-up at Low outdoor ambient temperatures.
During commissioning and when water temperature is very low, it is important for water to be heated gradually. In those
conditions, additional function should be used for starting at low water temperature conditions:
Space Heating at lower water temperatures (lower than 15°C) and lower outdoor ambient temperatures (lower than 7ºC)
can damage the heat pump when defrosting.
As a result, heating up to 15ºC when outdoor temperature is lower than 7ºC is performed by the Auxiliary Electrical Heater.
NOTE:
1. Forcing o Auxiliary electric heater by DSW4-7:ON is invalid when Initial Start-up at Low outdoor ambient temperatures.
2. This function is only valid when Auxiliary electric Heater is selected as heat source ([Heating Source] is set to [HP +
Heater] or [HP + Heater + Boiler] ) .
10.5.4 Heater Operation during SWP
NOTE:
1. Auxiliary Electric Heater can be forced o if DSW4-7:ON. Forcing o Auxiliary electric heater by DSW4-7:ON is invalid
when SWP Emergency operation (referring to 10.1.3.2) . The heater is forced o factory setting. Set DSW4-7: OFF to
cancel forcing o through the Dip switch on PCB1.
The conguration of this option should be done through the master controller.
Conguration →Complementary Heating →Electrical Heater
Mark Description Default Value Range Steps Units
SWP_EH1
Swimming Pool by
Electrical Heater
Disabled Disabled / Enabled
(1) Heater will only be enabled when all following conditions meet.
①
[SWP_EH1] set as Enabled.
②
Average Outdoor Ambient Temperature > Heat pump upper heating operation range (38°C-40°C) , that is out of heat
pump heating operation range.
(2) Heater Target temperature
Heater Target temperature= Target outlet water temperature of SWP- [Hdif] °C
Target outlet water temperature of SWP refer to 10.4.2.
(3) Heater load factor and Actual heater output refer to 10.5.1.
(4) Heater Operation during SWP Emergency operation.
Heater Operation during Emergency operation (referring to 10.1.3.2) as following:
①
Forcing o󰀨 Auxiliary electric heater by DSW4-7:ON is invalid when SWP Emergency operation.
②
Auxiliary Electric Heater will operate with Heater Target temperature equaling Target outlet water temperature of SWP
and without requirement of Average Outdoor Ambient Temperature range to o󰀨er immediate heating capacity during
Emergency operation.
③
Heater will only be enabled during Emergency operation when [SWP_EH1] set as Enabled.
10.5.5 Heater Operation during defrosting
NOTE:
1. Forcing o Auxiliary electric heater by DSW4-7:ON is invalid when defrosting.
The conguration of this option should be done through the master controller.
Conguration →Auxiliary Function →Defrost
Mark Description Default Value Range Steps Units
Defrost_EH1 Defrost by Electrical heater Disabled Disabled /Enabled - -
(1) Actual heater output will be step 3 during defrosting when all following conditions meet
①
[Defrost by Electrical heater] set as Enabled.
②
Measured inlet water temperature [Tiw] < 25°C.