1×
1
2 Set the night quiet mode switch (SW6-1) to ON.
9.4
About heat mode lock
Heat mode lock limits the unit to heat operation.
9.4.1
To turn on heat mode lock
1 Remove the switch cover on the service PCB.
2 Set the heat mode lock switch (SW5-1) to ON.
1×
1
9.5
About cool mode lock
Cool mode lock limits the unit to cool operation. Forced operation
remains possible in cool mode.
Specifications for the connector housing and pins: ST products,
housing VHR‑5N, pin SVH‑21T‑1,1
When cool mode lock is used in combination with the Hybrid for
Multi, these units will not operate by the heat pump.
9.5.1
To turn on cool mode lock
1 Short-circuit pins 3 and 5 of connector S15.
2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
3P600450-1D – 2020.08
ON
OFF
2
A
1
1
2
2
1
2
SW6
3
4
5
10
ON
OFF
4
A
3
10.1
2
1
1
After the installation of the unit, first check the items listed below.
2
2
4
Once all checks are fulfilled, the unit must be closed. Power-up the
3
3
2
1
unit after it is closed.
4
SW5
5
10 Commissioning
4×
Commissioning
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
Checklist before commissioning
The indoor unit is properly mounted.
The outdoor unit is properly mounted.
The system is properly earthed and the earth terminals
are tightened.
The power supply voltage matches the voltage on the
identification label of the unit.
There are NO loose connections or damaged electrical
components in the switch box.
There are NO damaged components or squeezed
pipes on the inside of the indoor and outdoor units.
There are NO refrigerant leaks.
The refrigerant pipes (gas and liquid) are thermally
insulated.
The correct pipe size is installed and the pipes are
properly insulated.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
Drainage
Make sure drainage flows smoothly.
Possible consequence: Condensate water might drip.
The indoor unit receives the signals of the user interface.
The specified wires are used for the interconnection
cable.
The fuses, circuit breakers, or locally installed protection
devices are installed according to this document, and
have NOT been bypassed.
S15
VHR-5N
SVH-21T-1
Installation manual
19