Mitsubishi Heavy Industries HM270V User Manual

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Underfloor heating and fan convectors- heating and
cooling
75
Function 75
Installation requirements 75
External heat source 76
Sun 76
Gas 77
Oil 78
Wood 79
Service
Operation control function by the indoor unit
controller 81
Operation control function by the outdoor unit
controller 94
Alarm list
103
Alarm with automatic reset 103
Temperature limiter alarm 103
HM270V alarm 103
FDCW100VNX alarm 104
Hot water alarm 106
Supply alarm 107
Troubleshooting guide 108
3 - Thermal cutout 108
4 - OU power failure 109
5 - Low condenser out 110
6 - High condenser out 111
7 - Anti freeze HX 112
8 - High HW temp. 9 High AH temp. 113
10 - High Supply temp. 1, 11 High Supply temp. 2 114
31 - S. fault HP
115
30 - S. fault Outdoor, 32 - S. fault Cond out, 33 - S. fault
Liquid line, 34 - S. fault HW, 35 - S. fault AH, 36 - S. fault
supply 1, 37 - S. fault supply 2 116
E35 - High HX temp 117
E36 - Permanent Hotgas 118
E37 - S. fault Tho-R 119
E38 - S. fault Tho-A 120
E39 - S. fault Tho-D 121
E40 - HP alarm 122
E42 - Current cut 123
E45 - Inverter communication error 124
E48 - Fan alarm 125
E49 - LP alarm 126
E51 - Inverter and fan motor error 128
E53 - S. fault Tho-S
129
E54 - S. fault LPT 130
E57 - Low refrigerant 131
E59 - Inverter error 132
Temperature sensor 133
Function check, components 134
HM 270V Relay test - forced control 134
DIP switches, FDCW100VNX 136
Circuit board layout 136
Function 136
Component replacement 137
HM270V 137
FDCW100VNX 138
Components
HM270V 148
Circulation pump (GP10) 148
Shuttle valves (QM30, QM31, QN11) 150
Particle filter (HQ1) 152
Safety valve (FL2) 152
Summar y 152
FDCW100VNX 153
Compressor 153
4-way valve 153
Expansion valve 153
Low pressure sensor 153
Technical data
Electrical circuit diagram 155
HM270V 155
FDCW100VNX 160
Temperature sensor 161
Sensor placement 161
Data for sensor in FDCW100VNX 161
Data for sensor in HM270V 161
Component positions 162
Indoor unit 162
Outdoor unit 164
Dimensions 165
Indoor unit 165
Outdoor unit 166
Technical specifications 167
Performance 167
Operating temperature range 169
Capacity diagram 170
Accessories 171
Accessories 171
Table of Contents

Mitsubishi Heavy Industries HM270V Specifications

General

Brand	Mitsubishi Heavy Industries
Model	HM270V
Category	Heat Pump
Language	English