VMH09SC-1 A-VMH12SC-1 VMH18SC-1 | Heat Controller VMH24SC-1 guide

Service Manual	VMH Series	Heat Controller, Inc.

5.2 Outdoor Unit

A-VMH09SC-1 A-VMH12SC-1

A-VMH18SC-1

14

Image 14

Heat Controller VMH24SC-1 service manual VMH09SC-1 A-VMH12SC-1 VMH18SC-1

Contents

Inverter Single Zone Ductless Mini Split Heat Pump Contents  Installation PrecautionSafety Precaution  For installation, always contact the dealer  Caution  Use two or more people to lift and transport the product  Keep level even when installing the product Operational  Do not block the inlet or outlet of air flow  Do not drink the water drained from the product Function Anti-freeze protection in cooling Outdoor unit Compressor delay Dimension Indoor Unit Model Dimension mm Outdoor Unit Refrigerant Cycle Diagram Indoor Outdoor Wiring Diagrams VMH09SC-1 A-VMH12SC-1 VMH18SC-1 Installation details Pipe length and the elevation Single Zone V Series Inverter System Pressure Test & Evacuation System Evacuation and Charging Operation characteristics Display function Electronic functionAbbreviation Main Protection Operation Modes and Functions Preheat modeFan only mode Preheat termination Cooling Mode Compressor running rules Frequency decreases Holds Model Current Indoor fan running rules Condenser high temperature T3 protectionOutdoor fan rules Evaporator low temperature T2 protection Heating Mode Compressor running rules T1-Ts-ΔT +5.0 +4.5 +3.5 +3.0 +2.5 +2.0 +1.5 +1.0 +0.5 I1HEAT I2HEAT I3HEAT Outdoor fan running rules VMH12SC-1 Indoor fan rulesUnit TEL0 TEL1 VMH09SC-1 VMH18SC-1 Defrost mode： Defrost Actions For 9K and 12K unit For 18K and 24K unit High evaporator coil temp.T2 protection Auto-mode Dehumidify mode Forced operation function Timer function Sleep function mode Automatic front panel function Ionizer Clean Air functionAuto-Restart function Troubleshooting Safety Eeprom parameter error diagnosis and solution Indoor Unit Error DisplayDiagnosis and Solution VMH Series E3 Indoor or E7 Outdoor Igbt over current protection diagnosis and solution VMH Series 29 P3 Error Low Ambient Protection Inverter compressor drive error diagnosis and solution Key parts checking Position Resistance Value VMH Series Some frequently-used R-T data for T1, T2, T3 and T4 sensor 2012