3. Check that the auxiliary heater step works by exiting the MANUAL TEST menu and entering the INFORMA-
TION -> TEMPERATURE -> SUPPLY LINE menu and check that the temperature rises.
4. Return to the menu MANUAL TEST and stop AUX. HEAT 1 by setting the value back to 0.
5. Repeat the steps in AUX. HEAT 1 for AUX. HEAT 2 and AUX. HEAT 3.
6. Stop the circulation pump by setting the value to 0.
10.6.2.7 Test the outdoor unit for DHP-A, -AL
1. Start the defroster shunt by setting the value SHUNT DEFR to -(minus). Check that the shunt motor is draw-
ing current.
2. Start the fan at low speed by setting the FAN L value to 1. Check that the fan runs at low speed.
3. Start the fan at high speed by setting the FAN H value to 1. Check that the fan runs at high speed.
10.6.2.8 Exit test operation
Set the value for MANUAL TEST to 0.
10.7 Commissioning
10.7.1 Starting circulation pumps manually
If any of the circulation pumps do not start, it may need to be helped as follows:
Figure 47. Location of the bleed screw
Caution! When bleeding the circulation pumps, water can come into contact with electrical components.
Therefore, protect the electric panel against water.
1. Open and remove the bleed screw on the front of the pump. Ensure to catch the water that runs out when
the screw is removed.
2. Insert a flat blade screwdriver and turn it in the direction of rotation of the pump (clockwise).
3. Reinstall the bleed screw with its rubber seal.
10.7.2 Adaptation to the heating system
Adjust the heat pump settings to the applicable heating system, for instance an underfloor heating or radiator
system. The delta temperature must be at least 8°C above the heat pump. The delta temperature should be 3–5°C
for the brine system. If one of the ΔT is not reached, the flow of the circulation pumps may need adjusting depend-
ing on the applicable heating system.
Installation instructions VMBMA1002 – 69
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