62
Using the PCB Switch
Switch is located on the main PCB.
1. Check the power between DVM Hydro unit / Hydro unit HT and the distribution board.
- Single phase: L, N
- Three phase: R, S, T, N
2. Check the outdoor unit.
1) Check if power and communication cable of the outdoor unit is connected properly. (Communication cable between
the DVM Hydro unit / Hydro unit HT and the outdoor unit should be connected to F1, F2)
2) Check the connection of the temperature sensor, drain pump and display etc.
3. Press the [K1] button to check the information on status of DVM Hydro unit / Hydro unit HT as shown in the below table.
[K1] Number of press
Displayed contents
Display
SEG1
SEG2
SEG3
SEG4
1
Capacity of DVM Hydro unit / Hydro unit HT
1
25000W
250
2
Set temperature
2
27 °C
027
3
Current temperature
3
27 °C
027
4
Room temperature
4
27 °C
027
5
EVA IN temperature
5
-17 °C
-17
6
EVA OUT temperature
6
-17 °C
-17
7
WATER IN temperature
7
-17 °C
-17
8
WATER OUT temperature
8
-17 °C
-17
9
Hot water tank temperature
9
27 °C
027
10
Defrost bypass valve
A
ON
000 / OFF
001
11
Pump output
B
ON
000 / OFF
001
12
Flow switch input
C
ON
001 / OFF
000
13
EEV Step
D
1400
140
14
Current targeted degree of super heat
E
3 °C
003
15
DVM Hydro unit / Hydro unit HT address
F
01
001
16
Version
2012/10/29
CA29
4. When there are more than one error, press the [K2] button to check the errors.
[K2] Number of press
Displayed contents
1
Currently displayed error
2
Most recently occurred error 1
3
Most recently occurred error 2
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