Sanyo CHDXR07263, CHDXR09663, CHDX09663, CHDX07263 service manual Contents

— CONTENTS —

Section 1: CONTROL FUNCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.	Introduction	. . . . . . 1-2
2.	Selecting Outdoor Unit for Operation	. . . . . . 1-3
3.	Compressor Control	. . . . . . 1-4
4.	Special Controls	. . . . . . 1-9
5.	Other Controls	. . . . . 1-14
6.	Operation of Solenoid Valves	. . . . . 1-15
7.	Outdoor Unit Electronic Thermostatic Expansion Valves [MOV1, MOV2 & MOV4]	. . . . . 1-17
8.	Outdoor Fan Control	. . . . . 1-19
9.	Demand Control	. . . . . 1-20
10.	Indoor Unit Control of the Electronic Control Valve	. . . . . 1-21
11.	Rap Valve Kit Control	. . . . . 1-23
12.	Indoor Unit Refrigerant Oil Self Recovery Control	. . . . . 1-24
13.	Discharge Temperature	. . . . . 1-25
14.	Current Protection	. . . . . 1-26
15.	Pressure Sensor Failure	. . . . . 1-27
16.	Backup Operation	. . . . . 1-28
17.	Service Maintenance Functions	. . . . . 1-30
18.	Other Functions	. . . . . 1-32

Section 2: OUTDOOR UNIT REPAIR PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.	Removing Panels	. 2-2
2.	Removing Electrical Component Box and Duct	. 2-3
3.	Discharging Compressor Oil	. 2-5
4.	Backup Operation	. 2-6
5.	Recovering Refrigerant	. 2-9
6.	Checking for Leakage After Repair	2-14
7.	Evacuating System	2-15
8.	Charging Compressor Oil	2-16
9.	Pumping Out Refrigerant from Outdoor Unit	2-20
10.	Compressor	2-23
11.	High and Low Pressure Sensors	2-35
12.	Replacing 4-way Valve	2-36

Section 3: OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER . . . . . . . . . . . . 3-1

1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

2. Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3. Ordinary Display Controls and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

4. Monitoring Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

5. Outdoor Unit Alarm History Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

6. Mode Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Section 4: REMOTE CONTROLLER FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

1. Simple Settings Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

2. Detailed Settings Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

3. Remote Controller Servicing Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

iii