Manuals / Heat Controller / Household Appliance / Heat Pump

Heat Controller VMH24SC-1 Outdoor Unit A-VMH09SC-1 A-VMH12SC-1, A-VMH18SC-1, VMH Series

Models: VMH18SC-1 VMH09SC-1 VMH24SC-1 VMH12SC-1

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Service Manual	VMH Series	Heat Controller, Inc.

5.2 Outdoor Unit

A-VMH09SC-1 A-VMH12SC-1

A-VMH18SC-1

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Heat Controller VMH24SC-1 Outdoor Unit A-VMH09SC-1 A-VMH12SC-1, A-VMH18SC-1, VMH Series, Heat Controller, Inc

Contents

VMH Series Version C VMH09SC-1 VMH12SC-1 Inverter Single ZoneDuctless Mini Split Heat Pump VMH18SC-1 VMH24SC-1CONTENTS 1.2Warning Installation 1. Precaution1.1Safety Precaution Always install a dedicated circuit and breakerFor installation, always contact the dealer VMH SeriesVMH Series CAUTIONVMH Series OperationalKeep level even when installing the product draftVMH Series Do not drink the water drained from the product2. Function VMH SeriesOutdoor unit Compressor delay VMH SeriesDimension mm 3. Dimension3.1 Indoor Unit VMH SeriesVMH Series 3.2 Outdoor UnitDimension mm ModelHeat Controller, Inc 4. Refrigerant Cycle DiagramVMH Series LIQUID SIDE 2-WAYVALVE GAS SIDE5.1 Indoor Units B-VMH09SC-1 B-VMH12SC-1 5. Wiring DiagramsVMH Series B-VMH18SC-1 B-VMH24SC-1VMH Series 5.2 Outdoor Unit A-VMH09SC-1 A-VMH12SC-1A-VMH18SC-1 Heat Controller, IncVMH Series 6. Installation details6.1Power Wiring A-VMH24SC-16.2 Pipe length and the elevation 1. System Evacuation and Charging 6.3 Pressure Test & EvacuationVMH Series 2. Deep Vacuum Method 7. Operation characteristicsVMH Series 3.Triple Evacuation Method8.2Display function 8. Electronic function8.1 Abbreviation T5 Compressor discharge temperature8.3.6 Indoor fan delayed open function 8.3 Main Protection8.3.2 Temperature protection of compressor top VMH Series80.6 8.4Operation Modes and Functions81.527.5 77.98.4.2.1 Compressor running rules VMH Series8.4.2 Cooling Mode Model VMH SeriesFrequency decreases Frequency holds Current8.4.2.2 Outdoor fan rules 8.4.2.4 Condenser high temperature T3 protectionVMH Series 8.4.2.3Indoor fan running rules8.4.3 Heating Mode 8.4.2.5 Evaporator low temperature T2 protectionVMH Series 8.4.3.1 Compressor running rulesVMH Series WhileModel VMH SeriesFrequency decreases Frequency holds CurrentUnit VMH Series8.4.3.3 Indoor fan rules TEL0VMH Series 8.4.3.4 Defrost mode：For 18K and 24K unit VMH SeriesDefrost Actions For 9K and 12K unit Heat Controller, Inc8.4.4 Auto-mode VMH Series8.4.3.5 High evaporator coil temp.T2 protection 8.4.6 Forced operation function VMH Series8.4.5 Dehumidify mode 8.4.8 Sleep function mode 8.4.7 Timer functionVMH Series 8.4.9 Auto-Restartfunction 8.4.11Ionizer Clean Air functionVMH Series 8.4.10Automatic front panel functionVMH Series 9. TroubleshootingSafety Electrolytic Capacitors HIGH VOLTAGE! CAUTIONVMH Series 9.1 Indoor Unit Error Display9.2 Diagnosis and Solution VMH Series VMH Series E3 INDOOR OR E7 OUTDOORVMH Series E5 & E6VMH Series 9.29 P3 ERROR - Low Ambient Protection VMH SeriesPosition Key parts checkingVMH Series ResistanceVMH Series 8.3.1. Compressor checking Model DA150S1C-20FZVMH Series Room temp.T1 sensor Indoor coil temp.T2 sensorVMH Series Heat Controller, Inc