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Heat Controller
VMH24SC-1, VMH12SC-1, VMH09SC-1, VMH18SC-1 VMH Series, Heat Controller, Inc
Models:
VMH18SC-1
VMH09SC-1
VMH24SC-1
VMH12SC-1
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Troubleshooting
Operation characteristics
Install
Refrigerant Cycle Diagram
Dimension
6.1Power Wiring
TS Preset temperature
Indoor Unit Error Display
Outdoor unit Compressor delay
8.4.11Ionizer Clean Air function
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Heat Controller, Inc.
VMH Series
Service Manual
3-2012
45
Page 44
Page 45
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Contents
Ductless Mini Split Heat Pump
Inverter Single Zone
VMH Series Version C VMH09SC-1 VMH12SC-1
VMH18SC-1 VMH24SC-1
CONTENTS
1.1Safety Precaution
1. Precaution
1.2Warning Installation
Always install a dedicated circuit and breaker
VMH Series
For installation, always contact the dealer
CAUTION
VMH Series
Keep level even when installing the product
Operational
VMH Series
draft
Do not drink the water drained from the product
VMH Series
VMH Series
2. Function
VMH Series
Outdoor unit Compressor delay
3.1 Indoor Unit
3. Dimension
Dimension mm
VMH Series
Dimension mm
3.2 Outdoor Unit
VMH Series
Model
VMH Series
4. Refrigerant Cycle Diagram
Heat Controller, Inc
LIQUID SIDE 2-WAYVALVE GAS SIDE
VMH Series
5. Wiring Diagrams
5.1 Indoor Units B-VMH09SC-1 B-VMH12SC-1
B-VMH18SC-1 B-VMH24SC-1
A-VMH18SC-1
5.2 Outdoor Unit A-VMH09SC-1 A-VMH12SC-1
VMH Series
Heat Controller, Inc
6.1Power Wiring
6. Installation details
VMH Series
A-VMH24SC-1
6.2 Pipe length and the elevation
6.3 Pressure Test & Evacuation
VMH Series
1. System Evacuation and Charging
VMH Series
7. Operation characteristics
2. Deep Vacuum Method
3.Triple Evacuation Method
8.1 Abbreviation
8. Electronic function
8.2Display function
T5 Compressor discharge temperature
8.3.2 Temperature protection of compressor top
8.3 Main Protection
8.3.6 Indoor fan delayed open function
VMH Series
81.527.5
8.4Operation Modes and Functions
80.6
77.9
VMH Series
8.4.2 Cooling Mode
8.4.2.1 Compressor running rules
Frequency decreases Frequency holds
VMH Series
Model
Current
VMH Series
8.4.2.4 Condenser high temperature T3 protection
8.4.2.2 Outdoor fan rules
8.4.2.3Indoor fan running rules
VMH Series
8.4.2.5 Evaporator low temperature T2 protection
8.4.3 Heating Mode
8.4.3.1 Compressor running rules
While
VMH Series
Frequency decreases Frequency holds
VMH Series
Model
Current
8.4.3.3 Indoor fan rules
VMH Series
Unit
TEL0
8.4.3.4 Defrost mode:
VMH Series
Defrost Actions For 9K and 12K unit
VMH Series
For 18K and 24K unit
Heat Controller, Inc
VMH Series
8.4.3.5 High evaporator coil temp.T2 protection
8.4.4 Auto-mode
VMH Series
8.4.5 Dehumidify mode
8.4.6 Forced operation function
8.4.7 Timer function
VMH Series
8.4.8 Sleep function mode
VMH Series
8.4.11Ionizer Clean Air function
8.4.9 Auto-Restartfunction
8.4.10Automatic front panel function
Safety
9. Troubleshooting
VMH Series
Electrolytic Capacitors HIGH VOLTAGE! CAUTION
9.1 Indoor Unit Error Display
9.2 Diagnosis and Solution
VMH Series
VMH Series
E3 INDOOR OR E7 OUTDOOR
VMH Series
E5 & E6
VMH Series
VMH Series
VMH Series
9.29 P3 ERROR - Low Ambient Protection
VMH Series
Key parts checking
Position
Resistance
8.3.1. Compressor checking Model DA150S1C-20FZ
VMH Series
Room temp.T1 sensor Indoor coil temp.T2 sensor
VMH Series
Heat Controller, Inc
VMH Series