Fujitsu Wpya050le Air To Water Heat Pump User Manual

FUJITSU WPYA050LE Air to Water Heat Pump User Manual

SPECIFICATION

		Unit	WPYA050LE
Cooling Capacity		kW	4.0
Heating Capacity		kW	5.0
Power source		phase	Single
		V	230
		Hz	50
Airflow Method		OUTLET INTAKE	TOP VIEW
Electrical Data	Input	W	Cooling Heating	;;	10251460
	Running Current (MAX.)	A	Cooling Heating	;;	4.5(6.6)6.4(10.9)
Water Pipe Size			Out Return	;;	R3/4(20A) R3/4(20A)
Power Cord	Number of core-wire		core-wire / 1.5~2.0mm2
Dimensions	Height	mm	675
	Width	mm	825
	Depth	mm	300
Net Weight		kg	50
Air Circulation	Type		Propeller Fan
	Motor Type		DC brushless(8-pole)
	Rated Output	W	30
Heat Exchanger			Plate fin configuration,forced draft16.9 FPI
Refrigerant Control Device			Expansion Valve
Refrigerant (R410A )		g	1050
Thermostat			Electronic Control

UNIT

DEFROSTING OPERATION(FOR A UNIT HEAT EXCHANGER)

• Defrosting operation is controlled by the temperature of outdoor heat exchanger sensed by the thermistor and the timer switch.
• Defrosting operation starts when the both of the following conditions are met at the same time. a)40 minutes’(*1) of continuous run of the compressor after the start of heating operation or after the completion of previous defrosting operation. b)The temperature of the outdoor heat exchanger stays lower than -1.5°C(*2) continuously for two minutes.
• Defrosting operating is called off if either of the following conditions is met. a)The temperature of outdoor heat exchanger rises to 15°C while 4-way-valve is ON. b)12 minutes has passed since compressor turned ON.
• Working condition of frost protection heater for expansion vessel The heater turns ON if the outdoor temperature keeps below 3 degree for 1 minute. The heater turns OFF if the outdoor temperature keeps above 5 degree for 1 minute.
  (*1) The period of time may be different in different cases.
  (*2) This temperature may be different in different cases.
  
• Working condition of frost protection heater for expansion vessel
  The heater turns ON if the outdoor temperature keeps below 3 degree for 1 minute.
  The heater turns OFF if the outdoor temperature keeps above 5 degree for 1 minute.

FOR YOUR SAFETY USE

• For the safety and proper use and handling of the product, please read and follow the instructions carefully.
• The meaning of the marks below are as follows.

Warning Improper use may cause the risk of death or serious injury of the user.

• Caution
• Strict enforcement
• High Voltage
• Connect the earthing cable
• Prohibited

ERROR CODES

The error codes displayed on the unit display board the location of the breakdown or abnormality.

UNIT	APPEARANCE, PORTION, PARTS SEEMED WRONG		METHOD OF CHECK	TROUBLESHOOTING
ERROR CODES
−	do not work at all	POWER SUPPLY	check the power supply.	confirm the power supply.
		FUSE CF1	check the electric continuity by tester. [see fig.1]	PCB(CONTROLLER) should be replaced.
		FUSE CF3	check the electric continuity by tester. [see fig.1]	PCB(CONTROLLER) should be replaced.
		PCB(CONTROLLER)	other than described above.	PCB(CONTROLLER) should be replaced.
A0	DC voltage Error	FAN MOTOR	operate without lead wire for FAN MOTOR.	if the same error code appears again, PCB (CONTROLLER) or PUMP should be replaced.if other error codes appear, FAN MOTOR should be replaced.
		PUMP	operate without lead wire for PUMP.	if the same error code appears again, PCB (CONTROLLER) or FAN MOTOR should be replaced.if other error codes appear, PUMP should be replaced.
		REACTOR	check lead wires are connected to the connector of REACTOR properly.	if the lead wires are not connected, connect them to the con- nector properly.
			check the electric continuity between connector of REACTOR by tester.	if there is no electric continuity for REACTOR, it should be re- placed.
		POWER SUPPLY	check the power supply.	confirm the power supply.
A1	Discharge temperature Error	SENSOR, TEMP. DISCHARGE	check the resistance by tester. [see table 4]	SENSOR, TEMP. DEFROST should be replaced.
		GAS LEAKAGE	check the service valve and refrigerant circuit (pipe).	collect refrigerant once, then recharge with prescribed mass.
A2	protective action against excesscurrent DC current detection	UNREASONABLE OPERATION UNDER OVERLOAD	check the place of installation (blockage of air inlet & outlet ).check the excess gas.	ensure the installation position to avoid blockage of air inlet & outlet.
				if excess gas is observed, collect all refrigerant once, then re- charge with prescribed mass.
		DROP OF POWER VOLTAGE	check the power voltage (230V) during operation.	confirm the power supply voltage. (230V)
		MOMENTARY STOP OF POWER(IN CASE OF LIGHTNING)		restart operation.
		PCB(CONTROLLER)	operate without the junction connector of compressor lead wire.	if the same error code appears again, PCB(CONTROLLER) should be replaced.
		COMPRESSOR	other than described above.	COMPRESSOR should be replaced.
A4	protective action against excesscurrent AC current detection	UNREASONABLE OPERATION UNDER OVERLOAD	check the place of installation (blockage of air inlet & outlet ).check the excess gas.	ensure the installation position to avoid blockage of air inlet & outlet.
				if excess gas is observed, collect all refrigerant once, then re- charge with prescribed mass.
		DROP OF POWER VOLTAGE	check the power voltage (230V) during operation.	confirm the power supply voltage. (230V)
		MOMENTARY STOP OF POWER (IN CASE OF LIGHTNING)		restart operation.
A5	abnormal revolution of com- pressor	UNREASONABLE OPERATION UNDER OVERLOAD	check the place of installation (blockage of air inlet & outlet).check the excess gas.	ensure the installation position to avoid blockage of air inlet & outlet.
				if excess gas is observed, collect all refrigerant once, then re- charge with prescribed mass.
		CLOGGED THE CIRCULATION PUMP AND/ OR HEATING CIRCUIT	check the pump and heating circuit.	remove the clog, then restart operation.
		DROP OF POWER VOLTAGE	check the power voltage (230V) during operation.	confirm the power supply voltage. (230V)
		MOMENTARY STOP OF POWER (IN CASE OF LIGHTNING)		restart operation.
		COMPRESSOR or PCB (CONTROLLER)	other than described above.	COMPRESSOR should be replaced.
A6	Suction temp. sensor Error	SENSOR, TEMP. SUCTION	check the resistance by tester. [see table 2]	if the sensor is faulty, it should be replaced.
A7	Defrost temp. sensor Error	SENSOR, TEMP. DEFROST	check the resistance by tester. [see table 2]	if the sensor is faulty, it should be replaced.
A8	Discharge temp. sensor Error	SENSOR, TEMP. DISCHARGE	check the resistance by tester. [see table 4] (*1)	if the sensor is faulty, it should be replaced.

 ERROR CODES

ELECTRIC CHARACTER

[table 1] Sensor, temp. outdoor

Temp.(°C)	Resistance(kΩ)
0	31
5	24
10	19
15	15
20	12
25	10
30	8.2
35	6.7
40	5.5
45	4.6
50	3.8
55	3.2

[table 2] Sensor, temp. defrost Sensor, temp. suction

Temp.(°C)	Resistance(kΩ)
0	29
5	23
10	19
15	15
20	12
25	10
30	8.3
35	6.9
40	5.7
45	4.8
50	4.1
55	3.4

[table 3] Sensor, temp. outgoing and return circulating water

DISPLAY OF ERRORS IN THE PAST

1. Display method
   • For a unit display board
     Press and hold the PUMP SW. and RESET SW. at the same time for 5 seconds to display a past error code and its sequence number. The PUMP SW. can then be used to select between a maximum of 8 past error codes to display. (If there are no error codes, “ – – ” is displayed.)
2. Display cancellation
   • For a unit display board
     While an error code is being displayed, press and hold the PUMP SW. and RESET SW. at the same time for 5 seconds to cancel the error code display and turn off the display. Alternatively, if no operations are performed for 5 minutes, the error code display is automatically cancelled and the display turned off. While an error code is being displayed, press and hold the reset switch for 10 seconds or more to delete all past error codes. The display turns to “ – – ”.

CHECK FOLLOWING STEPS

[fig. 1] Continuity of current fuse on the PCB (CONTROL-

– [fig. 2] Voltage of FAN MOTOR on the PCB(CONTROLLER)

Measure voltage between the connector pins of connector 14 . Connector 14 shall be checked during heating or cooling operation.

Measure voltage as follows without taking off the connector 14 .

Measure voltage between the connector pins of connector 13 . Connector 13 shall be checked during heating or cooling operation. Measure voltage as follows without taking off the connector 13 . PCB (CONTROLLER) is Normal PCB (CONTROLLER) is Normal between red + and black − approx. DC200~370V between yellow + and black − approx. DC3~7V between white + and black − approx. DC15V between white + and black − approx. DC200~370V between brown + and black − approx. DC3~7V between red + and black − approx. DC15V FAN MOTER Error

[fig. 3] Voltage of PUMP on the PCB(CONTROLLER)

Measure voltage between the connector pins of connector 13 . Connector 13 shall be checked during heating or cooling operation. Measure voltage as follows without taking off the con nector 13 .

• between white + and black − approx. DC200~370V
• between brown + and black − approx. DC3~7V
• between red + and black − approx. DC15V

[fig. 4] Resistance of 4-way valve coil

Take off the connector and check the resistance 4-way valve coi

[fig. 5] Resistance of the heater for tank

HOW TO DETACH PCB(CONTROLLER)

Wait at least 5min. After turning off the power before servicing.

1. Unscrew and detach WIRING LID. [See picture 1]
2. Unscrew (4pcs) and detach TOP PANEL. [See pictuere 2]
3. Unscrew (5pcs) and detach FRONT PANEL ASSY. [See picture 3]
4. Be sure to confirm the voltage between the connector pins of pump connector 13 (between white + and black _ ) is less than DC 10V with tester before disconnect lead wires. [See picture 4-1, 4-2, 4-3]
   
   
   
5. Unscrew (3pcs). [See picture 5-1,5-2,5-3]
   
   
6. Disconnect lead wire for FAN MOTOR from CASE OF PCB. [See picture 6]
7. Disconnect 3 lead wires (black, white, red) from TERMINAL BLOCK. Unscrew the gray lead wire. [See picture 7]
8. Disconnect all lead wires from PCB(CONTROLLER) and move CASE OF PCB forward. [See picture 8]
   
9. Unlock 4 hooks and detach CASE OF PCB(COVER). [See picture 9]
   
10. Unscrew and unlock 6 hooks. [See picture 10] Unscrew and unlock hooks one by one and detach PCB (CONTROLLER) slowly.
    
11. Detach PCB (CONTROLLER) from CASE. [See picture 11]
    

• Take the reverse procedure of “HOW TO DETACH PCB(CONTROLLER)”.
• Be sure to confirm 3 lead wires (black, white, red) and the gray lead wire are hooked. [See picture 12-1]
• Ensure that PCB (DISPLAY) is connected to PCB (CONTROLLER) properly. [See picture 12-2]
• Be sure to put FAN MOTOR lead wires in the passage along the side of CASE OF PCB. [See picture 12-3]
• Bind lead wires as they were. [See picture 12-4]
  

WIRING DIAGRAM

WARNING !

Electric Shock !

• Don’t touch electrically charged parts, as electric shock may occur even if they are switched off.
• Be sure to wait at least 5 min. after turning off the powerand to confirm the voltage between the connector pins of pump connector 13 [between white　 and black ] is less than DC10V with a tester before servicing.

• Do not touch any part of the electric circuit (including the wiring of thermistor and others), as it has high voltage against the ground.
• Pay attention not to damage the insulated wire when you tighten the screw, as the exposed wire may cause electric shock or malfunction.
• Do not ground the oscilloscope when you operate. You might destroy it. Also do not touch any metal part of the oscilloscope while operating.

MONITOR DISPLAY METHOD

1. Switch “ ON ” the MODE SW. 4 on the unit PCB (DISPLAY). The monitor number and monitor data are alternately displayed.
2. Push the PUMP SW. of the unit PCB (DISPLAY). Every time the PUMP SW. is pressed the display changes in the sequence below.
3. Switch “ OFF ” the MODE SW. 4 after completing the check.
   

Monitor	Monitor data display contents
d0	Circulating water return temperature	Units of 1°C
d1	Compressor operating frequency	Units of 1Hz
d2	Discharge temperature	Units of 1°C
d3	Power consumption value	Units of 100W
d4
d5	Defrost thermistor temperature	Units of 1°C
d6	Ambient air temperature	Units of 1°C
d7
d8	Suction temperature	Units of 1°C
d9	Circulating water outgoing temperature	Units of 1°C

CHARGE THE CIRCULATION WATER AND AIR PURGE IN WATER CIRCUIT

• When you push PUMP SW on display PCB, the water pump is started to operate to circulate the water. The each digital segment of right side on display PCB lights in sequence during operating the pump.
• The pump is automatically stopped after operating for 10 minutes. If it is not enough to let the air out of water circuit, please push PUMP SW once again after the pump stopped. When you would like to stop operating the pump before the pump is automatically stopped, please push PUMP SW once again.
  

FREEZE PREVENTION SETTING

If the outside temperature falls below about 2°C, freeze prevention operation is possible depending on the unit MODE SW. 1

The factory setting is “ ON : 2. Freeze prevention operation ”.

No.	PARTS NAME	PARTS No.
1	OUTLET GRILLE	20567790
2	FRONT PANEL ASSY.	20691630
3	RIGHT SIDE PANEL	20691780
4	LEFT SIDE PANEL ASSY.	20691800
5	TOP PANEL ASSY.	20699381
6	PROPELLER FAN	52630340
7	MOTOR	30137960
8	BRACKET,MOTOR	20681780
9	SENSOR (TEMP. OUTDOOR)	30138450
11	BOTTOM PANEL ASSY.	20705043
12	WIRING LID ASSY.	20698380
13	CONDENSER ASSY.	20692130
14	COIL,EXPANSION VALVE	30137500
15	EXPANSION VALVE	51914522
16	SENSOR (TEMP. DEFROST)	30135060
17	HEAT EXCHANGER ASSY.	20692900
18	PUMP ASSY.	20692782
20	COMPRESSOR	30137520
21	VIBRATION PROOF RUBBER	30137560
22	SENSOR (TEMP. DISCHARGE & SUCTION)	30135050
23
24	SENSOR (TEMP. CIRCULATING WATER)	30137510
25	REACTOR	30098720
26	TERMINAL BLOCK	30112970
27	PCB (DISPLAY)	30137930
28	PCB (CONTROLLER)	30154050
29	RUBBER HOSE (FOR RELIEF VALVE)	30137730
30	RUBBER HOSE (FOR AIR PURGE VALVE)	30137740
31	HOSE BAND (FOR RELIEF VALVE)	30084480
32	HOSE BAND (FOR AIR PURGE VALVE)	68616090
33	SOUND PROOF MATERIAL 1	20694790
34	SOUND PROOF MATERIAL 2	20694800
35	SOUND PROOF MATERIAL 3	20694810
36	SOUND PROOF MATERIAL 4	20694820
37	SOUND PROOF MATERIAL 5	20695360
38	OUTDOOR THERMISTOR HOLDER	20696760
39	COIL, 4-WAY VALVE	30137490
41	RELIEF VALVE	30112670
42	AIR PURGE VALVE	30112680
43	PLUG	20742470
44	4-WAY VALVE	30104090
45	CIRCULATING WATER OUTGOING PORT ASSY.	20694710
46	CIRCULATING WATER RETURN PORT ASSY.	20694740
47	RUBBER HOSE 1	20692840
48	RUBBER HOSE 2	20692850
49	RUBBER HOSE 3	20692860
50	RUBBER HOSE 4	20692870
51	RUBBER HOSE 5	20726660
53	O RING (P3)	30015770
54	O RING (P4)	01107120
55	O RING (P6)	01107600
56	O RING (P14)	01107150
57	QUICK FASTENER	30089210
58	QUICK FASTENER	00633600
59	QUICK FASTENER	00601690
60	HOSE BAND	30138460
61	HOSE BAND	30072400
62	HOSE BAND	30122230
65	DRAIN PLUG	10056760
66	CONNECTOR PIPE ASSY.	20768430
67	CASE OF PCB	20682670
68	CASE OF PCB (COVER)	20696130

UTZ-AT10CA

No.	PARTS NAME	PARTS No.
1	Interface Kit	20612052