SiUS281117
Table of Contents
iii
Room Temperature Thermistor in Remote Controller............................ 52
Thermostat Control with Operation Mode Set to "AUTO" ...................... 54
Freeze-up Prevention ............................................................................ 55
View of Operations of Swing Flaps ........................................................ 56
Hot Start Control (In Heating Operation Only) ....................................... 57
4 Step Thermostat Processing (FTQ) .................................................... 62
6.10 Interlocked with External Equipment (FTQ) ........................................... 63
Part 5 Field Setting..................................................................... 65
Procedure and Outline ........................................................................... 66
Operation when Power is Turned ON .................................................... 69
2. Field Setting from Remote Controller....................................................70
Wired Remote Controller ....................................................................... 70
Wireless Remote Controller ................................................................... 73
Setting Contents and Code No. for Indoor Units.................................... 74
3. Field Setting from Outdoor Unit ............................................................80
Location of DIP Switch and BS Button................................................... 80
Setting by DIP Switches......................................................................... 81
Detailed Explanation of Setting Modes .................................................. 87
Part 6 Service Diagnosis ............................................................ 94
1. Symptom-based Troubleshooting .........................................................96
2. Troubleshooting by Remote Controller .................................................99
Mode ChangeOver................................................................................. 99
Procedure of Self-diagnosis by Remote Controller .............................. 100
Error Codes and Description................................................................ 103
Error Codes - Sub Codes..................................................................... 104
Error Code Indication by Outdoor Unit PCB ........................................ 107
Error of External Protection Device...................................................... 109
Indoor Unit PCB Abnormality ............................................................... 110
Drain Water Level System Abnormality ............................................... 111
Indoor Unit Fan Motor Abnormality ...................................................... 113
2.10 Swing Flap Motor Abnormality / Lock .................................................. 115
2.11 Abnormal Power Supply Voltage ......................................................... 117
2.12 Electronic Expansion Valve Coil Abnormality ...................................... 118
2.13 Drain System Abnormality ................................................................... 120
2.14 Capacity Setting Abnormality ............................................................... 121
2.15 Transmission Error between Indoor Unit PCB and Fan PCB............... 122
2.16 Heat Exchanger (Liquid pipe) Thermistor Abnormality ........................ 124
2.17 Heat Exchanger (Gas Pipe) Thermistor Abnormality ........................... 125
2.18 Combination Error between Indoor Unit PCB and Fan PCB................ 126