Pioneer CB009GMFILCFHD, RB009GMFILCFHD, FB009GMFILCFHD, CB012GMFILCFHD, RB012GMFILCFHD SERVICE MANUAL

LIGHT COMMERCIAL SPLIT SYSTEMS

3D DC INVERTER HEAT PUMP

SERVICE MANUAL

Single Zone

ALL RIGHTS RESERVED. PARKER DAVIS HVAC INTERNATIONAL, INC., DORAL, FL 33172 USA

Phone: [phone] www.highseer.com

Revision A: 1605, Content updated.

Table of Contents		Model Numbers:
1.	Precaution	Indoor Unit Model Numbers:
2.	Part Names And Functions	Ceiling Cassette		Concealed Ducted		Floor, Ceiling, Low Wall
3.	Dimension	CB009GMFILCFHD		RB009GMFILCFHD		FB009GMFILCFHD
4.	Service space	CB012GMFILCFHD		RB012GMFILCFHD		FB012GMFILCFHD
5.	Refrigerant Cycle Diagram	CB018GMFILCFHD		RB018GMFILCFHD		UB018GMFILCFHD
6.	Wiring Diagram	CB024GMFILCFHD		RB024GMFILCFHD		UB024GMFILCFHD
7.	Static Pressure
		CB036GMFILCFHD		RB036GMFILCFHD		UB036GMFILCFHD
8.	Electric Characteristics	CB048GMFILCFHD		RB048GMFILCFHD		UB048GMFILCFHD

9.Sound Level

10.	Accessories	Outdoor Unit:
11.	The Specification of Power	Standard Communication Circuit Models:
12.	Installation Details	YN009GMFI22RPD		YN012GMFI22RPD	YN018GMFI22RPD
13.	Operation Characteristics	YN024GMFI22RPD
14.	Electronic Function	RS 485 Communication Circuit Models:
15.	Solar Panel	YN036GMFI17RUD		YN038GMFI17RUD

16.Troubleshooting

17.Disassembly Instructions

WARNING

Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical Code Part1 CSA C.22.1.

The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments

Installation or repairs made by unqualified persons can result in hazards to you and others.

Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.

This service is only for service engineer to use.

			CONTENTS
1. Precaution..................................................................................................................................................				1
1.1	Safety Precaution .......................................................................................................................			1
1.2	Warning ......................................................................................................................................			1
2. Part Names and Features..........................................................................................................................				4
2.1	Model Names of Indoor/Outdoor units........................................................................................			4
2.2	Part names of Indoor/Outdoor units............................................................................................			5
2.3	Features .....................................................................................................................................			9
3. Dimension................................................................................................................................................				18
3.1	Indoor Unit................................................................................................................................			18
3.2	Outdoor Unit .............................................................................................................................			23
4. Service Space ..........................................................................................................................................				24
4.1	Indoor Unit................................................................................................................................			24
4.2	Outdoor Unit .............................................................................................................................			26
5. Refrigerant Cycle Diagram......................................................................................................................				27
6. Wiring Diagram........................................................................................................................................				28
6.1	Indoor Unit................................................................................................................................			28
6.2	Outdoor Unit .............................................................................................................................			34
7. Fan Curves...............................................................................................................................................				40
8 Electric Characteristics............................................................................................................................				47
9 Sound Level..............................................................................................................................................				48
9.1	Indoor unit ................................................................................................................................			48
9.2	Outdoor unit..............................................................................................................................			51
10 Accessories ............................................................................................................................................				52
11 The Specification of Power....................................................................................................................				54
12 Installation Details..................................................................................................................................				56
12.1			Location selection ...............................................................................................................	56
12.2			Indoor unit installation.........................................................................................................	56
12.3			Outdoor unit installation ......................................................................................................	61
12.4			Refrigerant pipe installation ................................................................................................	62
12.5			Drainage pipe installation....................................................................................................	66
12.6			Vacuum Drying and Leakage Checking ..............................................................................	69
12.7			Additional refrigerant charge...............................................................................................	70
12.8			Engineering of insulation.....................................................................................................	71
12.9			Engineering of electrical wiring ...........................................................................................	72
12.10			Test operation..................................................................................................................	72
13. Operation Characteristics.....................................................................................................................				74
14. Electronic Function...............................................................................................................................				75
14.1 Abbreviation............................................................................................................................				75
14.2		Display function ......................................................................................................................		75
14.3		Main Protection.......................................................................................................................		75
14.4		Operation Modes and Functions.............................................................................................		76
16. Troubleshooting ....................................................................................................................................				82
16.1		Indoor Unit Error Display ........................................................................................................		83
16.2		Outdoor unit error display .......................................................................................................		84

For 9K-24K outdoor unit: ................................................................................................................		84
For 36K-48K Outdoor Unit..............................................................................................................		85
Outdoor check function...................................................................................................................		86
16.3	Diagnosis and Solution...........................................................................................................	88
16.4	Main parts check ..................................................................................................................	102
17. Disassembly Instructions ...................................................................................................................		109
17.1	Indoor unit ............................................................................................................................	109
17.2	Outdoor unit..........................................................................................................................	126

1.Precaution

1.1Safety Precaution

To prevent injury to the user or other people and property damage, the following instructions must be followed.

Incorrect operation due to ignoring instruction will cause harm or damage.

Before service the unit, be sure to read this service manual at first.

1.2Warning

Installation

Do not use a defective or underrated

circuit breaker. Use this appliance on a dedicated circuit.

There is risk of fire or electric shock.

For electrical work, contact the dealer, seller, a qualified electrician, or an authorized service center.

Do not disassemble or repair the product, there is risk of fire or electric shock.

Always ground the product.

There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

There is risk of fire of electric shock.

Always install a dedicated circuit and breaker.

Improper wiring or installation may cause electric shock.

Use the correctly rated breaker of

fuse.

There is risk of fire or electric shock.

Do not modify or extend the power

cable.

There is risk of fire or electric shock.

Do not install, remove, or reinstall the unit by yourself (customer).

There is risk of fire, electric shock, explosion, or injury.

1

Be caution when unpacking and installing the product.

Sharp edges could cause injury, be especially careful of the case edges and the fins on the condenser and evaporator.

For installation, always contact the dealer or an authorized service center.

Do not install the product on a defective installation stand.

Be sure the installation area does not deteriorate with age.

If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.

Take care to ensure that power cable could not be pulled out or damaged during operation.

There is risk of fire or electric shock.

Do not place anything on the power

cable.

There is risk of fire or electric shock.

Do not plug or unplug the power supply plug during operation.

There is risk of fire or electric shock.

Do not touch (operation) the product with wet hands.

Do not place a heater or other appliance near the power cable.

There is risk of fire and electric shock.

Do not allow water to run into electrical parts.

It may cause fire, failure of the product, or electric shock.

Do not store or use flammable gas or combustible near the product.

There is risk of fire or failure of product.

Do not use the product in a tightly closed space for a long time.

Oxygen deficiency could occur.

When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.

If strange sounds or smoke comes from product, turn the breaker off or disconnect the power supply cable.

There is risk of electric shock or fire.

Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives.

There is risk of property damage, failure of product, or electric shock.

Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)

There is risk of physical injury, electric shock, or product failure.

When the product is soaked, contact an authorized service center.

There is risk of fire or electric shock.

Be caution that water could not enter the product.

There is risk of fire, electric shock, or product damage.

Ventilate the product from time to time when operating it together with a stove etc.

There is risk of fire or electric shock.

Turn the main power off when cleaning or maintaining the product.

There is risk of electric shock.

When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.

There is risk of product damage or failure, or unintended operation.

Take care to ensure that nobody could step on or fall onto the outdoor unit.

This could result in personal injury and product damage.

CAUTION

Always check for gas (refrigerant)

leakage after installation or repair of product.

Low refrigerant levels may cause failure of product.

2

Install the drain hose to ensure that water is drained away properly.

A bad connection may cause water leakage.

Keep level even when installing the product.

It can avoid vibration of water leakage.

Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.

It may cause a problem for your neighbors.

Use two or more people to lift and transport the product.

Do not install the product where it will be exposed to sea wind (salt spray) directly.

It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

Operational

Do not expose the skin directly to

cool air for long time. (Do not sit in the draft).

Do not use the product for special purposes, such as preserving foods, works of art etc. It is a consumer air conditioner, not a precision refrigerant system.

There is risk of damage or loss of property.

Do not block the inlet or outlet of air

flow.

Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.

There is risk of fire, electric shock, or damage to the plastic parts of the product.

Do not touch the metal parts of the product when removing the air filter. They are very sharp.

Do not step on or put anything on the product. (outdoor units)

Always insert the filter securely. Clean the filter every two weeks or more often if necessary.

A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.

Do not insert hands or other objects through air inlet or outlet while the product is operated.

Do not drink the water drained from the product.

Use a firm stool or ladder when cleaning or maintaining the product.

Be careful and avoid personal injury.

Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.

There is risk of fire or explosion.

Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

They may burn of explode.

If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote of the batteries have leaked.

3

2.Part Names and Features

2.1Model Names of Indoor/Outdoor units

Series	Capacity	Indoor units	Outdoor units
Cassette		CB009GMFILCFHD
Duct	9K	RB009GMFILCFHD	YN009GMFI22RPD
Console		FB009GMFILCFHD
Cassette		CB012GMFILCFHD
Duct	12K	RB012GMFILCFHD	YN012GMFI22RPD
Console		FB012GMFILCFHD
Cassette		CB018GMFILCFHD
Duct	18K	RB018GMFILCFHD	YN018GMFI22RPD
Floor Ceiling		UB018GMFILCFHD
Cassette		CB024GMFILCFHD
Duct	24K	RB024GMFILCFHD	YN024GMFI22RPD
Floor Ceiling		UB024GMFILCFHD
Cassette		CB036GMFILCFHD
Duct	36K	RB036GMFILCFHD	YN036GMFI17RUD
Floor Ceiling		UB036GMFILCFHD
Cassette		CB048GMFILCFHD
Duct	48K	RB048GMFILCFHD	YN048GMFI17RUD
Floor Ceiling		UB048GMFILCFHD

4

2.2 Part names of Indoor/Outdoor units

Ceiling Cassette Unit

5

Ducted Concealed Units

6

Floor Console Units

7

Ceiling-Floor Units

8

2.3 Features

2.3.1 Duct Units

2.3.1.1 Installation accessories: (Field Supplied / Optional)

Front Board, Canvas Air Passage, Filter, Panel, for easy installation

Panel

2.3.1.2 Easy Installation: Two air inlet styles (Bottom side or Rear side)

Air inlet from rear is standard for all capacity; air inlet from bottom is optional.

The size of air inlet frame from rear and bottom is same, it’s very easy to move the cover from bottom to rear side, or from rear to the bottom, in order to matching the installation condition.

Air intake from rear (Standard)		Air intake from bottom (Optional)

2.3.1.3 Fresh air intake function

Install one duct from the reserved fresh-air intake to outdoor.

Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more healthy and comfortable.

9

2.3.1.4 Easy maintenance

Clean the filter (Optional, standard product without filter)

It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear side or bottom side.

Replace the motor or centrifugal fan

Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily.

Motor

Blower Housing

Ventilated Panel

2.3.1.5 Reserved remote on-off and central control ports

Reserved remote on-off ports and central control ports, can connect the cable of an on-off controller or a central controller to realize remote on-off control function or group control function.

Remote on-off ports

Central control ports

2.3.1.6 Built-in drain pump (Optional):

Built-in drain pump can lift the water to 750mm upmost. It’s convenient to install drainage piping under most space condition.

10

2.3.2.7 Build-in Drain Pump with float switch

The drain pump can lift the condensing water up to 750mm upmost.

It’s convenient to install drainage piping under most space condition.

<![if ! IE]>

<![endif]>750mm upmost

2.3.1.8 Built-in display board

The standard indoor unit can be controlled by wired controller.

There is a display board with a receiver in the E-box. Move out the display, and fix it in other place, even in the distance of 10m. The unit will realized remoter control.

The wired controller and the display board can display the error code or production code when the chips detect some failure.

Wired Controller (Standard)

Remote Controller (Optional)

Display

11

2.3.2 Cassette Unit

2.3.2.1 Lower Noise

Optimize air channel system design to ensure the maximum quietness and comfort.

Noise max down 6dB.

Old

New

2.3.2.2 Turbo mode (Optional)

Turbo function can boost cooling or heating speed in a short period, and makes the room cool down or heat up rapidly.

Common vs. Turbo

Turbo Mode (After 30 min)

2.3.2.3 Fire-proof controller box

Electrical control box adopts new design, which can meet higher fire safety requirements.

New

Old

2.3.2.4 Fresh Air

Fresh air intake function bring you fresh and comfortable air feeling.

2.3.2.5 Wired controller (Optional)

Compared with infrared remote controller, wired controller can be fixed on the wall and avoid mislaying. It's mainly used for commercial zone and makes air conditioner control more convenient.

12

2.3.2.6 Build-in Drain Pump

The drain pump can lift the condensing water up to 750mm upmost.

It’s convenient to install drainage piping under most space condition.

2.3.2.7Terminals for alarm lamp and long-distance on-off controller connection are standard

Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human control.

13

2.3.3 Console

2.3.3.1. Modern and elegant appearance

The simple and stylish designs can nicely harmonies with your living space.

3.2.3.2. Four panels optional

2.3.3.3. Two air-outlet ways Cooling mode

Quick Cooling

To maintain room temp

Air outlet from top and bottom to make quick cooling ------When the A/C is just switched on, or room temp. is still high, cold air will be blown out from top and bottom air outlet to cool down the room quickly

Air outlet from top to maintain room temp. ----When the room has been cooled down, or the A/C has been opened over 1 hour, cold air only from the top outlet to keep constant room temp

14

Heating mode

Anti-cold air ------When the AC is just turn on, temperature of evaporator is very low, in this case, in order to prevent cold air direct blowing, only the upper louver is opened in a high position, the lower louver closed.

2.3.3.4. Four air inlets

2.3.3.5. Low noise

DC indoor fan motor, which has five speeds.

Low noise and energy saving.

Advanced centrifugal fan technology makes a fast airflow and reduces the indoor noise.

2.3.3.6.Golden fin is optional.

2.3.3.7.Active carbon filter is standard

15

2.3.1 Ceiling-floor Units

2.3.1.1 Two-way installation

The rounded design of the ceiling and floor type air conditioner allows either ceiling or floor-level installation. Ceiling installation saves room space, while floor installation helps prevent the loss of warm air.

2.3.1.2 Brief design

Brief design that is suitable for any interior will not only give you cooling and heating performance but also upgrade your lifestyle.

2.3.1.3 3D airflow

Vertical air flow and horizontal airflow can be adjusted by remote controller, the cooperation of the two airflow ways help to spread air comfortably throughout even a large room. With these functions, the whole room can be evenly air-conditioned for both floor-level and ceiling installation.

16

2.3.1.4 Optional drainage pipe connection

Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe installation. Make you more convenient during installation.

C Panel (LED display)

D Panel

2.3.1.5 Convenience operating and easy maintenance

Remote controller as standard, wired controller for optional.

The filter without screw fixed, can be took out easily.

2.3.1.6 Easy installation, save working time

The pipes can be connected from bottom, back and right side, makes the installation more easily.

The wiring works can be finished before installation.

2.3.1.7 Outside water pump for optional when ceiling installation.

17

3. Dimension

3.1 Indoor Unit

Duct Units

Air filter ( optional )	air inlet from rear side
	<![if ! IE]> <![endif]>J

	H2
	H1
<![if ! IE]> <![endif]>W2	<![if ! IE]> <![endif]>W1
Test mouth & Test cover
25 Drain connecting pipe
( for pump )

		I
4-install hanger		L		B
		A	Liquid side
25 Drain pipe			Gas side
<![if ! IE]> <![endif]>M			25 Drain pipe
				<![if ! IE]> <![endif]>D C
			Electric control box	Fresh air intake
<![if ! IE]> <![endif]>G	E	F
<![if ! IE]> <![endif]>H

Air filter ( optional )

K air inlet from bottom side

			Outline dimension(mm)				Air outlet opening size				Air return opening size			Size of install		Size of refrigerant pipe
	Capacity (KBtu)													hanger
			A	B	C	D	E	F	G	H	I	J	K	L	M	H1	H2	W1	W2
	9	mm	700	210	635	570	65	493	35	119	595	200	80	740	350	120	143	95	150
		in	27.56	8.27	25	22.44	2.56	19.41	1.38	4.69	23.43	7.87	3.15	29.13	13.78	4.72	5.63	3.74	5.91
	12	mm	700	210	635	570	65	493	35	119	595	200	80	740	350	120	143	95	150
		in	27.56	8.27	25	22.44	2.56	19.41	1.38	4.69	23.43	7.87	3.15	29.13	13.78	4.72	5.63	3.74	5.91
	18	mm	920	210	635	570	65	713	35	119	815	200	80	960	350	120	143	95	150
		in	36.22	8.27	25.00	22.44	2.56	28.07	1.38	4.69	32.09	7.87	3.15	37.80	13.78	4.72	5.63	3.74	5.91
	24	mm	920	270	635	570	65	713	35	179	815	260	20	960	350	120	143	95	150
		in	36.22	10.63	25.00	22.44	2.56	28.07	1.38	7.05	32.09	10.24	0.78	37.80	13.78	4.72	5.63	3.74	5.91
	36	mm	1140	270	775	710	65	933	35	179	1035	260	20	1180	490	120	143	95	150
		in	44.88	10.63	30.51	27.95	2.56	36.73	1.38	7.05	40.75	10.24	0.78	46.46	19.29	4.72	5.63	3.74	5.91
	48	mm	1200	300	865	800	80	968	40	204	1094	288	45	1240	500	175	198	155	210
		in	47.24	11.81	34.06	31.50	3.15	38.11	1.57	8.03	43.07	11.34	1.77	48.82	19.69	6.89	7.80	6.10	8.27

18

Cassette Units (9K, 12K, 18K)

Liquid side

Gas side

	Body
<![if ! IE]> <![endif]>570	<![if ! IE]> <![endif]>523
	545
	570

Drain hole

( for Service )

E-parts box

4-Screw hole (for install panel)

4-install hanger

32 Drain pipe

	65 Fresh air intake
	75
		<![if ! IE]> <![endif]>126 157
	Wiring connection port	<![if ! IE]> <![endif]>44
		42
		68
	Panel

<![if ! IE]>

<![endif]>647

Wiring connection port

260

19

Cassette Units (24K, 36K, 48K)

<![if ! IE]> <![endif]>D	92	92
		75 Fresh air intake
<![if ! IE]> <![endif]>D	<![if ! IE]> <![endif]>B	<![if ! IE]> <![endif]>80
	A	80

	D	D
<![if ! IE]> <![endif]>92		<![if ! IE]> <![endif]>A
<![if ! IE]> <![endif]>92
<![if ! IE]> <![endif]>92		<![if ! IE]> <![endif]>A
<![if ! IE]> <![endif]>92
	B

4-install hanger	680
Gas side				Body
Liquid side
E-parts box
<![if ! IE]> <![endif]>780			<![if ! IE]> <![endif]>780	<![if ! IE]> <![endif]>840
Service hole for
draining pump
	680
	840
<![if ! IE]> <![endif]>D	A		A
<![if ! IE]> <![endif]>D			<![if ! IE]> <![endif]>B
92	92	92	92

	136
	126
	91
		<![if ! IE]> <![endif]>90 135	Wiring connection port
<![if ! IE]> <![endif]>A		<![if ! IE]> <![endif]>92
		<![if ! IE]> <![endif]>92
<![if ! IE]> <![endif]>A	B	<![if ! IE]> <![endif]>92
32 Drain hole		<![if ! IE]> <![endif]>92	Test mouth & Test cover
		<![if ! IE]> <![endif]>132
	D	D
	196
	C

Panel

	<![if ! IE]> <![endif]>950
950	55

	Capacity (Btu/h)		A	B	C	D
	24K	mm	160	75	205	50
		inch	6.30	2.95	8.07	1.97
	36K	mm	160	95	245	60
		inch	6.30	3.74	9.65	2.36
	48K	mm	160	95	287	60
		inch	6.30	3.74	11.30	2.36

20

Console Units

	<![if ! IE]> <![endif]>600
700	210

195

16 Drain pipe

Hanging arm

Unit: mm

21

Ceiling-floor Units (18K-48K)

2-

33

Wiring connection port

2-

40

120

Drain discharge port			<![if ! IE]> <![endif]>140	<![if ! IE]> <![endif]>204
Fresh air intake	<![if ! IE]> <![endif]>94
		120	Refrigerant pipe hole

<![if ! IE]>

<![endif]>B

C

A

			D
	Hanging arm
	<![if ! IE]> <![endif]>220
	<![if ! IE]> <![endif]>222
	Capacity (Btu/h)		A	B	C	D
	18K / 24K	mm	1068	675	235	983
		inch	42.05	26.57	9.25	38.70
	36K	mm	1285	675	235	1200
		inch	50.59	26.57	9.25	47.24
	48K	mm	1650	675	235	1565
		inch	64.96	26.57	9.25	61.61
			22

3.2 Outdoor Unit

A

D	B

Note: The above drawing is only for reference. The appearance of your units may be different.

	Model		W	D	H	W1	A	B
	YN009GMFI22RPD	mm	770	300	555	840	487	298
		inch	30.3	11.8	21.9	33.1	19.2	11.7
		mm	800	333	554	870	514	340
	YN012GMFI22RPD
		inch	31.5	13.1	21.8	34.3	20.2	13.4
		mm	845	363	702	914	540	350
	YN018GMFI22RPD
		inch	33.3	14.3	27.6	36.0	21.3	13.8
	YN024GMFI22RPD	mm	946	410	810	1030	673	403
	YN036GMFI17RUD	inch	37.2	16.1	31.9	40.6	26.5	15.9
	YN048GMFI17RUD	mm	952	415	1333	1045	634	404
		inch	37.5	16.3	52.5	41.1	25.0	15.9

23

4. Service Space

4.1 Indoor Unit

Duct Units

Ensure enough space required for installation and maintenance.

	200mm(7.87in) or more			300mm(11.81in) or more

600mmx600mm/23.62inx23.62in Check orifice

All the indoor units reserve the hole to connect the fresh air pipe. The hole size as following

Cassette Units

Unit: mm

24

Console Unit

Ceiling-floor Units

25

4.2 Outdoor Unit

(Wall or obstacle)

Air inlet	More than 30cm(11.81in)
More than 30cm
(11.81in)	Maintain channel

Air inlet		More than 60cm
		(23.62in)
	Air outlet	More than 200cm(78.74in)

More than 60cm (23.62in)

26

5. Refrigerant Cycle Diagram

INDOOR

OUTDOOR

HEAT EXCHANGE (EVAPORATOR)

T2 Evaporator temp. sensor middle

T2B Evaporator temp. sensor outlet

	Electronic
LIQUID SIDE	CAPILIARY TUBE expansion valve
2-WAY VALVE	T3 Condenser
	temp. sensor

T4 Ambient

HEAT

T1 Room temp.

EXCHANGE

sensor

temp. sensor

(CONDENSER)

GAS SIDE 4-WAY VALVE

3-WAY VALVE

T5 Discharge

temp. sensor

Compressor	COOLING

HEATING

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