Table of Contents
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Table of Contents
"E1" Outdoor Unit PCB Abnormality.............................................................. 103
4.1
"E3" Abnormal High Pressure (Detected by the HPS).................................. 104
4.2
"E4" Actuation of Low Pressure Sensor ....................................................... 106
4.3
"E5" Compressor Motor Lock ....................................................................... 109
4.4
"E7" Malfunction of Outdoor Unit Fan Motor................................................. 111
4.5
"E9" Malfunction of Electronic Expansion Valve........................................... 114
4.6
"F3" Malfunctioning in Discharge Pipe Temperature .................................... 117
4.7
"H3" Malfunctioning HPS System ................................................................. 119
4.8
4.9
"J1" Malfunction of Pressure Sensor ............................................................ 122
4.10
"L1" Faulty Outdoor PC Board ...................................................................... 124
4.11
"L4" Radiation Fin Temperature Increased .................................................. 126
4.12
"L5" DC Output Overcurrent (Instantaneous)............................................... 128
4.13
"L8" DC Output Overcurrent (Instantaneous)............................................... 130
4.14
"L9" Stall Prevention (Time Lag) .................................................................. 132
4.15
4.16
PCB) ...................................................................................................... 134
"P1" Open Phase or Power Supply Voltage Imbalance ................................ 136
4.17
"P4" Malfunction of Radiator Fin Temperature Thermistor........................... 137
4.18
"PJ" Malfunction of Radiator Fin Temperature Thermistor........................... 138
4.19
"U0" Gas Shortage (Malfunction) ................................................................. 139
5.1
"U2" Abnormal Power Supply Voltage.......................................................... 141
5.2
5.3
"U3" Underfloor Heating Screed Dry-out Failure .......................................... 143
5.4
"UF" Malfunction of Transmission between Hydro-box and Outdoor Unit or Gas
5.5
Shortage ................................................................................................ 146
5.6
148
"UA" Indoor-Outdoor Combination Problem ................................................. 149
5.7
6.1
Check No.1 - Outdoor Unit: Checking the Installation Condition ................. 150
6.2
Check No.2 - Outdoor Unit: Checking the Expansion Valve........................ 151
6.3
Check No.3 - Checking the Thermistors ...................................................... 152
6.4
Check No.4 - Resistance Conversion Table (Ambient, Coil, Fin) ................ 153
6.5
6.6
Check No.6 - Evaluation of Abnormal High Pressure .................................. 156
6.7
Check No.7 - Evaluation of Abnormal Low Pressure................................... 157
6.8
Check No.8 - Clogged Points ...................................................................... 158
6.9
Check No.10 - Outdoor Unit: Fan Speed Pulse ........................................... 159
6.10
Check No.11 - Outdoor Unit: Check for Power Transistor ........................... 160
6.11
Check No.13 - Check for Inadequate Refrigerant........................................ 161
6.12
Check No.14 - Check for Excessive Refrigerant Charging .......................... 162
6.13
Check No.15 - Check for Factors Causing Wet Operation .......................... 163
6.14
008)........................................................................................................ 164
4
ESIE13-02
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