Water Condensation; Automatic Defrosting Of Evaporator; Forced Defrosting; Possible Problems Due To External Conditions - AZURO BP-85HS-A Bedienungsanleitung

6.3

WATER CONDENSATION

Lower temperatures of the evaporator during the heat pump operation are the cause of air moisture condensation on evaporator lamellae and condensate formation.
If the relative air humidity is very high, as much as a few litres per hour can be produced. This water will fl ow down over the lamellae into the space of cabinet bottom
and drains away through a plastic fi tting designed for connection to a 3/4" PVC draining hose directing the condensate to a suitable sewer system.
It is very simple to mix up the condensed water with water leaked from heat pump inside. There are two simple methods how one can fi nd whether the liquid is the condensate or not:
1. Switch the equipment off and leave the pool pump in operation only. If the water stops fl owing out, the condensate is concerned.
2. Make the test for the presence of chlorine in the water in question (provided that chlorine is used for pool water treatment) - condensate should not contain chlorine.
Note: Moisture that can be present near the equipment results from water vapour condensation and is quite OK.
6.4

AUTOMATIC DEFROSTING OF EVAPORATOR

The evaporator has to be defrosted in the heating mode only, as the evaporator lamellae can get iced up by condensate if ambient temperatures are too
low. The process runs automatically according to parameters set for the defrosting mode, see chapter 5.3 Operating Parameter Setting and Checking.
The following process refers to setting the parameters 3, 4, 5 a 6.
Course of Defrosting:
1 – Process start:
The defrosting system will switch-on, if the following conditions are met at the same time:
- The temperature measured by the temperature sensor of defrosting drops below -5 °C (the measurement is made in each 40 minutes of operation).
- The compressor runs for 40 minutes continuously, without interruption.
2 – Both the compressor and blower are stopped.
3 – After the delay of approx. 20 second the four-way valve is reconfi gured.
4 – One minute after stopping (only) the compressor starts and the frost deposit accumulated on the lamellar evaporator
begins to thaw out which is usually associated with vapour formation.
5 – Process end:
Defrosting is fi nished as soon as either of the following conditions is met:
- The temperature of the temperature sensor rises to 15 °C.
- The compressor runs for the total time of 6 minutes only.
6 – The compressor stops.
7 – One minute (approx.) after it has stopped the four-way valve is reconfi gured.
8 – Within two minutes of stopping the compressor starts again together with the blower in the heating mode.
6.5

FORCED DEFROSTING

In case that frost begins to deposit on the evaporator one can make use of the forced defrosting function.
Press and hold pressed the key MODE for about 10 seconds. The equipment will start defrosting the evaporator. The mode of forced defrosting will terminate
as soon as the set defrosting parameters are achieved. Then the equipment will stop for a minute (approx.) and resumes operation in its normal heating mode.
Note: The defrosting parameters can be set – for details see chapter 5.2 Operating Parameter Setting.
Note: Neither automatic nor forced defrosting can be used in case the heat pump operates in the cooling mode.
DANGER: Use the mode of forced defrosting only if there is a real frost deposit on the evaporator.
The application of forced defrosting in other events may result in equipment overheating, coolant leakage
or even damage to the equipment.
6.6

POSSIBLE PROBLEMS DUE TO EXTERNAL CONDITIONS

Under certain external conditions the exchange of heat may be insuffi cient between coolant and water on one side and coolant and air on the other side. It results in
a pressure increase in the cooling circuit and increased power consumption of the compressor. The temperature sensor fi xed at compressor discharge line and the circuit
breaker in the supply line will protect the equipment from such extreme conditions. The display will show the error message EE 6.
13