Heat Controller VMH09SC-1, VMH12SC-1 Auto-Restart function, Automatic front panel function

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Service Manual

VMH Series

Heat Controller, Inc.

 

 

 

8.4.8.3Timer setting is available

8.4.8.4When user uses timer off function in sleep mode (or sleep function in timer off mode), if the timing is less than 7 hours, sleep function will be cancelled when the set time reached. If the timing is more than 7 hours, the machine will not stop until it reaches the set time in sleep mode.

8.4.9 Auto-Restart function

The indoor unit is equipped with auto-restart function, which is carried out through an auto-restart module.

In case of a power failure, the module memorizes the set conditions before the power failure. The unit will

resume the previous operation setting (not including Swing function) automatically after 3 minutes when

power is restored.

If the memorization condition is forced cooling mode, the unit will run in cooling mode for 30 minutes and

turn to auto mode as 75°F/24°C set temp.

If A/C is off before power off and A/C is required to start up, the compressor will have a 1 minute delay. All

other conditions, the compressor will have 3 minutes delay when restarts.

8.4.10Automatic front panel function:

8.4.10.1The automatic front panel is forced to turn to the moves to closed position at an angle of 50°when the unit is turned off and is not affected by any signal from remote controller.

8.4.10.2When the unit is turned on, the panel opens automatically at an angle of 50°, then the horizontal louver will open.

8.4.10.3When the unit is turned off, the panel is closed automatically at an angle of 50°, then the horizontal louver will close.

8.4.10.4If the panel requires moving while the horizontal louver is operating, the horizontal louver will stop and then carry out the action of the panel. After ending the action of the panel, the horizontal louver will continue its action.

8.4.11Ionizer (Clean Air) function

8.4.11.1Clean Air function is available only when the A/C is on, and it’s controlled through remote controller.

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Contents Inverter Single Zone Ductless Mini Split Heat Pump Contents Safety Precaution Precaution Installation  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 coolingOutdoor unit Compressor delay Dimension Indoor UnitModel Dimension mm Outdoor UnitRefrigerant Cycle Diagram Indoor OutdoorWiring Diagrams VMH09SC-1 A-VMH12SC-1 VMH18SC-1 Installation details Pipe length and the elevation Single Zone V Series Inverter SystemPressure Test & Evacuation System Evacuation and ChargingOperation characteristics Abbreviation Electronic functionDisplay function Main Protection Operation Modes and Functions Preheat modeFan only mode Preheat terminationCooling Mode Compressor running rules Frequency decreases Holds Model CurrentOutdoor fan rules Condenser high temperature T3 protectionIndoor fan running rules Evaporator low temperature T2 protection Heating Mode Compressor running rulesT1-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 rulesVMH12SC-1 Indoor fan rulesUnit TEL0 TEL1 VMH09SC-1 VMH18SC-1Defrost mode: Defrost Actions For 9K and 12K unit For 18K and 24K unit High evaporator coil temp.T2 protection Auto-modeDehumidify mode Forced operation functionTimer function Sleep function modeAuto-Restart function Ionizer Clean Air functionAutomatic front panel function Troubleshooting SafetyDiagnosis and Solution Indoor Unit Error DisplayEeprom parameter error diagnosis 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 solutionKey parts checking Position Resistance ValueVMH Series Some frequently-used R-T data for T1, T2, T3 and T4 sensor 2012