mundoclima AEROTHERM MAM-V9 Serie Manual De Usuario E Instalacion página 168

ERROR MALFUNCTION
CODE OR PROTECTION
High discharge temperature
protection.
High Temperature difference
protection between water inlet
and water outlet of the plate
heat exchanger.
Module protection
DC fan motor protect
FAILURE CAUSE
AND CORRECTIVE ACTION
1.The same reason to P1.
2. System is lack of refrigerant volume. Charge the refrigerant
in right volume.
3.TW_out temp sensor is loosen Reconnect it..
4. T1 temp sensor is loosen. Reconnect it.
5. T5 temp sensor is loosen. Reconnect it.
1. Check that all shut off valves of the water circuit are
completely open.
2. Check if the water filter needs cleaning.
3. Refer to "9.4 Charging water"
4. Make sure there is no air in the system (purge air).
5. Check on the manometer that there is sufficient water
pressure. The water pressure must be >1 bar(water is cold).
6. Check that the pump speed setting is on the highest speed.
7. Make sure that the expansion vessel is not broken.
8. Check that the resistance in the water circuit is not too high
for the pump. (refer to "10.6 Setting the pump speed" ).
1. Power supply voltage of the unit is low, increase the power
voltage to the required range.
2. The space between the units is too narrow for heat
exchange. Increase the space between the units.
3. Heat exchanger is dirty or something is block on the surface.
Clean the heat exchanger or remove the obstruction.
4. Fan is not running. Fan motor or fan is broken, Change a
new fan or fan motor.
5. Over charge the refrigerant volume. Recharge the refrigerant
in right volume.
6. Water flow rate is low, there is air in system, or pump head
is not enough. Release the air and reselect the pump.
7. Water outlet temp sensor is loosen or broken, reconnect it or
change a new one.
8. Water tank heat exchanger is smaller than the required
1.7m2 (10-16kW unit) or 1.4m2 (5-9kW unit).
9.Module wires or screws are loosen. Reconnect wires and
screws. The Thermal Conductive Adhesive is dry or drop.Add
some thermal conductive adhesive.
10.The wire connection is loosen or drop. Reconnect the wire.
11. Drive board is defective, replace a new one.
12. If already confirm the control system has no problem, then
compressor is defective, replace a new compressor.
Contact your local dealer
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