Related Manuals for Heat Controller VMH C Series
Summary of Contents for Heat Controller VMH C Series
- Page 1 SERVICE MANUAL Inverter Single Zone Ductless Mini Split Heat Pump VMH Series Version C VMH30SC-1 VMH36SC-1 Heat Controller • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com...
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Page 2: Table Of Contents
VMH 30, 36 SerieS Service Manual Heat Controller CONTENTS 1.Safety Precautions ..........................3 2. Functions ............................8 3. Dimensions ............................10 3.1 Indoor Unit ..........................10 3.2 Outdoor Unit ........................... 11 4. Refrigerant Cycle Diagram ......................12 5. Wiring Diagrams ..........................13 5.1 Indoor Unit .......................... -
Page 3: Safety Precautions
VMH 30, 36 SerieS Heat Controller Service Manual 1. Precaution 1.1 Safety Precaution n To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instructions will cause harm or damage. - Page 4 VMH 30, 36 SerieS Service Manual Heat Controller n For installation, always contact the dealer or an Authorized service center. There is a risk of fire or electric shock. n Do not install this product on a defective installation stand.
- Page 5 VMH 30, 36 SerieS Heat Controller Service Manual n If strange sounds, smells, or smoke come from product, turn the breaker off or disconnect the power supply. There is a risk of electric shock or fire. n Do not open the inlet grill of this product during operation. (Do not tough the electrostatic filter, if the unit is so equipped.)
- Page 6 VMH 30, 36 SerieS Service Manual Heat Controller n Use two or more people to life and transport this product. Avoid personal injury. n Do not install this product where it will be exposed to sea wind (salt spray) directly.
- Page 7 VMH 30, 36 SerieS Heat Controller Service Manual n Use a firm stool or ladder when cleaning or maintaining this product. Be careful to avoid personal injury. n Replace all batteries in the remote control with new ones at the same type. Do not mix old and new batteries or different types of batteries.
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Page 8: Functions
VMH 30, 36 SerieS Service Manual Heat Controller 2. Function Indoor unit Operation by remote controller Sensing by room temperature Senses room temperature Room temperature control Maintains the room temperature in accordance Maintain the room temperature in accordance with the setting temperature. - Page 9 VMH 30, 36 SerieS Heat Controller Service Manual Outdoor unit Power relay control The unit has 3 minute delay between ON/OFF operations. Low noise air flow system Propeller fan makes the outdoor unit run more quietly. Anti-rust cabinet Valve protection cover It protects the valves and prevents water from dripping.
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Page 10: Dimensions
VMH 30, 36 SerieS Service Manual Heat Controller 3. Dimension 3.1 Indoor Unit Model W in.(mm) D in.(mm) H in.(mm) B-VMH30SC-1 56.9(1445) 8.9(277) 13.4(340) B-VMH36SC-1... -
Page 11: Outdoor Unit
VMH 30, 36 SerieS Heat Controller Service Manual 3.2 Outdoor Unit Dimension Mode W in.(mm) D in.(mm) H in.(mm) W1 in.(mm) A in.(mm) B in.(mm) 35.4(900) 12.4(315) 33.9(860) 38.9(980) 23.2(590) 13.1(333) A-VMH30SC-1 39.0(990) 13.6(345) 38.0(965) 42.3(1075) 24.5(624) 14.4(366) A-VMH36SC-1... -
Page 12: Refrigerant Cycle Diagram
VMH 30, 36 SerieS Service Manual Heat Controller 4. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE REVERSING VALVE 3-WAY VALVE (Heating Model only) -
Page 13: Wiring Diagrams
VMH 30, 36 SerieS Heat Controller Service Manual... -
Page 14: Outdoor Unit
VMH 30, 36 SerieS Service Manual Heat Controller 5.2 Outdoor Unit A-VMH30SC-1 A-VMH36SC-1... -
Page 15: Installation Details
VMH 30, 36 SerieS Heat Controller Service Manual 6 Installation details 6.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening inch N.cm N.cm Ф6.35 1500 1600 Ф9.52 2500 2600 Ф12.7 3500 3700 Ф16 4500 4700 Ф19 6500 6700 6.2 Power wiring &... -
Page 16: Pipe Length And Elevation
VMH 30, 36 SerieS Service Manual Heat Controller 6.3 Pipe length and the elevation Pipe size Standard Max. Max. Additional Capacity length Elevation Length refrigerant Btu/h Liquid ft. (m) B ft. (m) A ft. (m) /ft. (g/m) 50(15) 5/8’’ 3/8’’... -
Page 17: Pressure Test And Evacuation
VMH 30, 36 SerieS Heat Controller Service Manual 6.4 Pressure Test & Evacuation Air and moisture in the refrigerant system will have undesirable effects. ● Pressure in the system rises. ● Operating current rises. ● Cooling or heating efficiency drops. -
Page 18: Operation Characteristics
VMH 30, 36 SerieS Service Manual Heat Controller 2. Deep Vacuum Method 2. Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum of 500 microns and vacuum gage capable of accurately measuring the vacuum depth. -
Page 19: Electronic Functions
VMH 30, 36 SerieS Heat Controller Service Manual 8. Electronic functions 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature TS: Preset temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. -
Page 20: Main Protection
VMH 30, 36 SerieS Service Manual Heat Controller This indicator appears only when the compressor is in operation and indicates the current operating frequency. 8.2.2 LED display control function. Pressing “LED display” button on remote controller will turn off all displays on indoor unit. -
Page 21: Operation Modes And Functions
VMH 30, 36 SerieS Heat Controller Service Manual If T4(outdoor ambient temperature) ＜37°F(3°C) and the machine connects to power supply for the first time or if T4＜37°F(3°C) and compressor has stopped for over 3 hours, the compressor crankcase heater will turn on. - Page 22 VMH 30, 36 SerieS Service Manual Heat Controller 8.4.2 Cooling Mode 8.4.2.1 Compressor running rules: The operation frequency of compressor after starting submits to the following rule. T4 °F T4 °C ℃ 113° (45) Fmax=F4 109° (43) 104° (40) Fmax=F7 100°...
- Page 23 VMH 30, 36 SerieS Heat Controller Service Manual Note: When the value of T1 minus TS stays in the same temp. zone for 3 minutes, the compressor will run as the below rules: A~E: Increases the frequency to higher level until to F8.
- Page 24 VMH 30, 36 SerieS Service Manual Heat Controller 8.4.2.2 Indoor fan running rules In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and auto. Auto fan in cooling mode acts as follow: °F...
- Page 25 VMH 30, 36 SerieS Heat Controller Service Manual 8.4.3 Heating Mode 8.4.3.1 Compressor running rules: The operation frequency of compressor after starting submits to following rule. F° C° 93° (34) 91.5° (33) 82.3° (28) 80.6° (27) 77° (25) 75° (24) 71.5°...
- Page 26 VMH 30, 36 SerieS Service Manual Heat Controller Note: When T1-TS keeps in the same temp. zone for 3 minutes, the compressor will run by the following rules: A~E: Increase the frequency to higher level until F10. F: Keep the current frequency.
- Page 27 VMH 30, 36 SerieS Heat Controller Service Manual 8.4.3.3 Indoor fan running rules: F° C° Setting 111° (44) 100.5° (38) 98.6° (37) 93° (34) Breeze 91.5° (33) 75° (24) Super Breeze 62.5° (17) If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127 seconds with breeze.
- Page 28 VMH 30, 36 SerieS Service Manual Heat Controller The unit runs with T3＜37.5°F(3°C) for 40 minutes and T3 stays lower than 21°F(-6°C) for more than 3 minutes. The unit runs with T3＜37.5°F(3°C) for 80 minutes and T3 stays lower than 25°F(-4°C) for more than 3 minutes.
- Page 29 VMH 30, 36 SerieS Heat Controller Service Manual 8.4.3.5 High evaporator coil temp.T2 protection: (1) T2>127.5°F(53°C), compressor running frequency decreases to the lower level and runs for 20 seconds. When the frequency decreases to F2 and the T2 exceeds 127.5°F(53°C) for 3 minutes, the compressor will stop.
- Page 30 VMH 30, 36 SerieS Service Manual Heat Controller 8.4.5 Auto-mode This mode can be chosen with remote controller and the setting temperature can be changed between 62.5°F(17°C)~86°F(30°C). In auto mode, the machine will choose cooling or fan-only mode according to ΔT (ΔT =T1-Ts).
- Page 31 VMH 30, 36 SerieS Heat Controller Service Manual 8.4.7.3 Timer off. After turning on, the machine will turn off automatically when reaching the setting time. 8.4.7.4 Timer on/off. After turning off, the machine will turn on automatically when reaching the setting “on”...
- Page 32 VMH 30, 36 SerieS Service Manual Heat Controller 8.4.10 Two speed outdoor fan function 8.4.10.1 Outdoor fan starts at the same time with compressor, but stops 30 seconds later after compressor stop. 8.4.10.2 Outdoor fan action in heating mode (including heating in auto mode).
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Page 33: Troubleshooting
VMH 30, 36 SerieS Heat Controller Service Manual 9. Troubleshooting 9.1 Indoor Unit Error Display Display LED STATUS Timer Auto Operation EEPROM parameter error Indoor / outdoor units communication ☆ ☆ ☆ ☆ protection ☆ ☆ Zero-crossing signal error Indoor fan speed has been out of ☆... -
Page 34: Diagnosis And Solution
VMH 30, 36 SerieS Service Manual Heat Controller 9.2 Diagnosis and Solution 9.2.1 EEPROM parameter error diagnosis and solution Shut off the power supply and turn on 5 seconds Replace indoor PCB later. Does it run? The problem comes out again... - Page 35 VMH 30, 36 SerieS Heat Controller Service Manual 9.2.2 Indoor / outdoor unit’s communication error Return to normal Possible Turn off the power supply, after 1 minute, electromagnetic connect the power supply and turn on interference. the unit. E1 after 8 minutes Check the wiring between indoor and outdoor unit.
- Page 36 VMH 30, 36 SerieS Service Manual Heat Controller 9.2.3 Fan speed has been out of control Shut off the power supply and turn on 5 seconds later The unit does not work normally Turn off the unit, rotate the cross Disassemble the connection between fan.
- Page 37 VMH 30, 36 SerieS Heat Controller Service Manual 9.2.5 IGBT over-strong current protection diagnosis and solution. Check whether the connections between outdoor PCB and IPM are good? Check whether the IPM is fixed to radiator Fastening the IPM to the radiator...
- Page 38 VMH 30, 36 SerieS Service Manual Heat Controller 9.2.7 High temperature protection of compressor top diagnosis and solution. Does compressor operate? Is the connection good Reconnect it Is refrigerant circulation Replace it Is protector normal? volume normal? Charge refrigerant Is abnormality the same Replace the outdoor PCB.
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