Hisense AHM-080HCDSAA - EC WP1 Speed Control

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Control function
10.8.3 EC WP1 speed control
Inside EC WP1 can be controlled by PWM input signal (EC Water Pump).
The conguration of this option should be done through the master controller.
Conguration →Heat pump→Water pump conguration
Mark Description Default Value Range Steps Units
Pump_mode Operation Speed Mode Fix Fix/ΔT 1 °C
Space_speed
Space speed (heating and
cooling)
100% 50-100% 5 %
DHW_speed DHW speed 100% 50-100% 5 %
SWP_speed SWP Speed 100% 50-100% 5 %
(1) Speed of Inside EC WP1 can be controlled by PWM input signal (EC Water Pump) in 2 optional modes:
● Fixed speed selected by installer when [Pump_mode] set as [Fix].
● Variable speed by Water Inlet and Water Outlet temperature when [Pump_mode] set as [ΔT].
NOTE:
1. Variable speed is valid only during space heating/cooling operation. DHW operation and SWP operation always works
as Fixed speed.
(2) When EC WP1 works as [Fix] of [Pump_mode], Fixed speed value of WP1_speed is set by [Space_speed] during space
heating/cooling operation, [DHW_speed] during DHW operation and [SWP_speed] during SWP operation.
● Set Fixed speed value and PWM input signal
WP1_speed
Space_speed
DHW_speed
SWP_speed
%
model
44(2.0HP) 60(2.5HP) 80(3.0HP)
PWM_in % PWM_in % PWM_in %
space cooling space heating space cooling space heating space cooling space heating
50 18 60 18 55 14 50
55 18 54 18 50 14 45
60 18 49 18 45 14 41
65 18 43 18 40 14 36
70 18 37 18 35 14 31
75 18 32 18 30 14 27
80 18 26 18 25 14 22
85 15 21 15 20 14 18
90 11 15 11 15 11 13
95 8 10 8 10 8 9
100 5 5 5 5 5 5
(3) When EC WP1 works as [ΔT] of [Pump_mode], Speed of WP1 is controlled by PWM input signal to achieve target value
of Water Inlet and Water Outlet temperature di󰀨erence.
● space heating operation
5%≤PWM_in (n) ≤60%
Maximum value of Target outlet water
temperature (refer to 10.2.2.3)
Target value of Water Inlet and Water
Outlet temperature di󰀨erence
55- 60ºC 8 ºC
45 -55ºC 7 ºC
25-45ºC 5 ºC
less than 25ºC 3 ºC
● space cooling operation
5%≤PWM_in (n) ≤18%
Target value of Water Inlet and Water Outlet temperature di󰀨erence sets as 5 ºC.