Name: Mitsubishi MT300
Brand: Mitsubishi
Rating: 5 (1 reviews)

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154

Service

'10 • HM-T-149

6 - High condenser out

YES

Are the characteristics of the condenser out

sensor (BT12) OK?

Check the flow over heat exchanger

EP2 and settings for heating and

hot water.

Replace the sensor.

Troubleshooting guide

Default Chapter2
- Table of Contents2
Safety Precautions4
Technical Data7
Technical Specifications8
- Installation Requirements10
- Operating Temperature Range11
- Capacity Diagram12
- Dimensions15
- Electrical Circuit Diagram23
Dimensions39
Electrical Circuit Diagram39
- For Home Owners41
- Information about the Installation42
- Principle of Operation42
- Features42
- For Home Owners42
- Front Panel, Indoor Unit43
- For Home Owners43
- Menu Types44
- Quick Movement44
- Key Lock44
- For Home Owners44
- Comfort Setting Heating45
- Operating Status45
- Changing the Room Temperature Manually45
- For Home Owners45
- Default Heating Curve Setting46
- For Home Owners46
- Readjusting the Default Settings47
- Comfort Setting with Room Sensor47
- Heating System 247
- Vacation Set Back47
- For Home Owners47
- Comfort Setting Cooling48
- Cooling Operated from the Outdoor Sensor in Operating Mode Autoc48
For Home Owners48
- Comfort Setting Hot Water49
- Extra Hot Water49
- For Home Owners49
- Maintenance50
- Checking the Safety Valves in Indoor Unit50
- Hot Water Heater Safety Valve50
- For Home Owners50
- Pressure Gauge in Indoor Unit51
- Emptying the Hot Water Heater51
- Maintenance of Outdoor Unit51
- Saving Tips51
- For Home Owners51
- Dealing with Comfort Disruption52
- For Home Owners52
- Operating Mode “Add. Heat Only”53
- Emergency Mode53
- For Home Owners53
- Alarm Indications54
- Resetting Alarms54
- For Home Owners54
Comfort Setting Heating56
- Outdoor Unit Installation56
- General56
General60
- Dimensioning Expansion Vessel61
- Manual Shunting61
- Emptying the Vessel61
Indoor Unit Installation62
- Pipe Installation62
- General62
System Description110
- Heating Operation Mode110
Principle of Operation110
- Hot Water Operation Mode111
- Cooling Operation Mode111
Comfort Setting Cooling112
- General112
Radiators - Only Heating113
- Hms140V(Mt300)-Fdcw140Vnx114
Underfloor Heating and Cooling115
Fan Convectors - Heating and Cooling116
Dual System - Heating and Cooling117
Underfloor Heating and Fan Convectors- Heating and118
- Underfloor Heating and Fan Convectors - Heating and Cooling118
- External Heat Source119
- Gas120
- Oil121
External Heat Source122
- Wood122
Controller147
Alarm List147
- Alarm with Automatic Reset147
- Temperature Limiter Alarm147
- Indoor Unit Alarm147
- Outdoor Unit Alarm148
- Hm-T-150
- Hot Water Alarm151
- Supply Alarm151
- Troubleshooting Guide152
- Thermal Cutout152
- OU Power Failure153
Troubleshooting Guide155
- High Condenser out155
- Anti Freeze HX156
- High HW Temp. 9 High AH Temp.157
- High Supply Temp. 1, 11 High Supply Temp. 2158
- Aborted Defrost159
- S. Fault HP160
- E35 - High HX Temp162
- E36 - Permanent Hotgas163
- E37 - S. Fault Tho-R164
- E38 - S. Fault Tho-A165
- E39 - S. Fault Tho-D166
- E40 - HP Alarm167
- E42 - Current Cut168
- E45 - Inverter Communication Error169
- E47 - Inverter A/F Module over Current170
- E48 - Fan Alarm171
- E49 - LP Alarm172
- E51 - Inverter and Fan Motor Error174
- E53 - S. Fault Tho-S175
- E54 - S. Fault LPT176
- E57 - Low Refrigerant177
- E59 - Inverter Error178
Function Check, Components179
- Indoor Unit Relay Test - Forced Control179
- Relay Functions180
- DIP Switch Setting181
- Fdcw100Vnx,140Vnx182
- Component Replacement183
DIP Switch Setting184
- Fdcw71Vnx184
- Fdcw140Vnx198
Components205
- Indoor Unit206
- Circulation Pump206
Indoor Unit208
- ShuttleValves(Qm30,Qm31,Qn11)208
Outdoor Unit211
- Compressor211
- Expansion Valve211
- Low Pressure Sensor211
Temperature Sensor212
- Data for Sensor in Indoor Unit212
- Component Positions213
- List of Components218
- Outdoor Unit Components View219
- Accessories Accessories220
Accessories221
- Wind Protection221
- Air to Water Heat Pump227
- Installation Requirements229

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Mitsubishi MT300 Specifications

General

Brand	Mitsubishi
Model	MT300
Category	Heat Pump
Language	English

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Table of Contents

Questions and Answers:

Mitsubishi MT300 Specifications

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