Danfoss DHP-A Installation Manual page 58

Installation Guide
Shunt valve (HGW)
1. Activate the shunt valve by setting the parameter HGW-SHUNT to + (plus).
2. Check that the wheel on the shunt valve is turning.
3. Stop the test by setting the parameter HGW-SHUNT to 0.
10.5.6 Test the compressor
Warning
1. Start the circulation pump by setting the parameter CIRC.PUMP to 100 (1 if fixed circulation pump).
2. Start the heat pump compressor by setting the parameter HEAT PUMP to 1.
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3. Check that the compressor is running in the right direction by putting a hand on the pressure pipe before the compressor starts,
the pipe is then cold. Feel again after a short while to ensure the pressure pipe becomes properly hot.
4. Check that it sounds normal and there is no noise.
5. If the pipe does not get hot, or if the compressor sounds abnormal, perform fault tracing according to the service instructions.
6. Stop the compressor by setting the parameter HEAT PUMP to 0.
7. Stop the circulation pump by setting the parameter CIRC.PUMP to 0.
10.5.7 Testing the auxiliary heating power stages
1. Start the circulation pump by setting the parameter CIRC. PUMP to 100 (1 if fixed circulation pump).
2. Start the first auxiliary heating power stage by setting the parameter ADD.HEAT 1 to 1.
3. Check that the auxiliary heater step works by exiting the MANUAL TEST menu and entering the INFORMATION -> 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 for the first auxiliary heating for AUX. HEAT 2 and AUX. HEAT 3 depending on actual fuze size.
6. Stop the circulation pump by setting the parameter CIRC. PUMP to 0.
10.5.8 Test the DHP-A outdoor unit
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1. Start the defroster shunt by setting the parameter SHUNT DEFR to -(minus). Check that the shunt motor is working.
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.
4. Check that the temperature of the defrosting sensor and the actual outdoor temperature are the same.
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Domestic heat pumps
Risk of burn injury, the pressure pipe on the compressor can be very hot after operating for a while!
At the same time as the parameter is set to 1 for HEAT PUMP the brine pump starts.
The defroster shunt motor has 120 sec running time end to end.
VMGFQ102 Danfoss Heating Solutions