Position
Name
Position
Name
7
Operating pressure switch
17
Return line heating system
8
Four-way valve
18
Solenoid
9
Discharge pipe
19
Non-return valve
10
Air heat exchanger
3.2.2
Indoor unit
1
DHP-AQ Mini
1
2
3
4
DHP-AQ Midi
1
2
4
3
5
DHP-AQ Maxi
1. Control module (transparent in image)
2. Immersion heater
3. Reversing valve
4. Circulation pump
5. Water heater
3.3
Measurement points
Caution
When reading the resistance of the sensors, the sensor leads must first be disconnected from the control
equipment.
°C
Outdoor / Defrost sensor
150 ohm, Ω
PT1000 sensor
1000 ohm, Ω
Other sensors
22 kilo ohm, kΩ
-30
1884
–
–
-25
1443
–
–
Service Instructions
DHP-AQ
VMGFJ202
Danfoss Heating Solutions
12
