VEVOR VBPYCA-210 Installations- Und Bedienungsanleitung Seite 32

No. Fault Name
Er 15, Er 16,
Er 18, Er 21,
Er 27, Er 29,
7
Er 42,
Temperature
sensor fault
Er 19
8 DC fan motor
fault
Er 23, Er 32
Water system
9
temperature
protection
Er 28,
10 CT over current
protection
Fault Analysis
1. The connection between the temp.
sensor and the main board is poor.
2. Temp. sensor is broken.
3. The sensor resistance on the main
board fault.
1. Loose wiring or poor connection of
fan motor.
2. The fan motor is blocked.
3. Main board fault.
1. Temp. sensor fault.
2. Low water flow.
2.1 The valve in water system is not
open.
2.2 Waterway blockage, may
appear in the heat exchanger or
valve part.
2.3 Improper water pump selection.
2.4 The water pump is broken.
2.5 Water pipe size is too small.
3. Heat exchanger is fouling.
1. Poor condensing.
1.1 Water temp. is too high (over
range operation).
1.2 Low water flow.
1.2.1 The valve in water system is
not open.
1.2.2 Waterway blockage, may
appear in the heat exchanger or
valve part.
1.2.3 Improper water pump
selection.
1.2.4 The water pump is broken.
2. Refrigerant system is mixed with
air, maybe the vacuum is not enough.
3. The valve is blocked.
4. The valve opening steps not
enough.
5. Excessive refrigerant.
6. The fan motor is blocked.
1. Reconnect the temp. sensor
cable.
2. Replace the temp. sensor.
3. Replace the main board.
1. Reconnect the fan motor cable.
2. Clean out the blockage from the
fan motor or replace the fan motor.
3. Replace the main board.
1. Replace the temp. sensor.
2.1 Clean or replace the blocked
part.
2.2 Change the pump according to
the water flow and water head.
2.3 Change the water pipe.
2.4 Reset the water flow switch
manually.
2.5 Choose the suitable water pipe
size.
3. Clean the dirt of the heat
exchanger surface.
1.1 Operate within the allowable
range.
1.2.1 Open the valve.
1.2.2 Clean the blocked part or
replace it.
1.2.3 Change the pump according to
the water flow and water head.
1.2.4 Replace the water pump.
2. Vacuumize and refill the
refrigerant according to the
nameplate.
3. Clean or replace the valve.
4. Turn the valve up appropriately.
5. Bleed out the refrigerant and refill
the refrigerant according to the
nameplate.
6. Clean out the blockage from the
fan motor or replace the fan motor.
31
Methods