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Summary of Contents for COMFORT-AIRE B-SVH24SA-1
- Page 1 Service Manual SVH Series Inverter Single Zone Ductless Mini-Split A-SVH09SA-0 B-SVH09SA-0 A-SVH09SA-1 B-SVH09SA-1 A-SVH12SA-0 B-SVH12SA-0 A-SVH12SA-1 B-SVH12SA-1 A-SVH18SA-1 B-SVH18SA-1 A-SVH24SA-1 B-SVH24SA-1 www.marsdelivers.com...
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Page 2: Table Of Contents
Service Manual - SVH 09/12/18/24 Series CONTENTS 1. Precaution ..............................3 1.1 Safety Precaution .......................... 3 1.2 Warning ............................3 2. Part Names ..............................6 2.1 Model Names of Indoor/Outdoor Units ..................6 2.2 Indoor/Outdoor units ........................7 3. Dimensions ..............................8 3.1 Indoor Unit ............................. -
Page 3: Precaution
Service Manual - SVH 09/12/18/24 Series Sharp edges could cause injury, be especially careful of the case edges and the fins on the 1. Precaution condenser and evaporator. For installation, always contact the 1.1 Safety Precaution dealer or an authorized service center. To prevent injury to the user or other ... - Page 4 Service Manual - SVH 09/12/18/24 Series There is risk of electric shock or fire. product. Stop operation and close the window It can avoid vibration or water leakage. in storm or hurricane. If possible, remove Do not install the product where the ...
- Page 5 Service Manual - SVH 09/12/18/24 Series Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.
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Page 6: Part Names
Service Manual - SVH 09/12/18/24 Series 2. Part Names 2.1 Model Names of Indoor/Outdoor Units Indoor Units Outdoor Units Series Capacity B-SVH09SA-0 A-SVH09SA-0 B-SVH09SA-1 A-SVH09SA-1 B-SVH12SA-0 A-SVH12SA-0 Inverter B-SVH12SA-1 A-SVH12SA-1 B-SVH18SA-1 A-SVH18SA-1 B-SVH24SA-1 A-SVH24SA-1... -
Page 7: Indoor/Outdoor Units
Service Manual - SVH 09/12/18/24 Series 2.2 Indoor/Outdoor units... -
Page 8: Dimensions
Service Manual - SVH 09/12/18/24 Series 3. Dimensions 3.1 Indoor Unit Model WxDxH (mm) WxDxH (inch) Mounted plate B-SVH09SA-0 715x194x285 28.15x7.64x11.22 B-SVH09SA-1 B-SVH12SA-0 805x194x285 31.69x7.64x11.22 B-SVH12SA-1 B-SVH18SA-1 957x213x302 37.68x8.39x11.89 B-SVH24SA-1 1040x220x327 40.94x8.67x12.87... - Page 9 Service Manual - SVH 09/12/18/24 Series For Mounting Plate A For Mounting Plate B For Mounting Plate C...
- Page 10 Service Manual - SVH 09/12/18/24 Series For Mounting Plate D...
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Page 11: Outdoor Unit
Service Manual - SVH 09/12/18/24 Series 3.2 Outdoor Unit More than 30cm(11.8in) More than 60cm(23.6in) (Service space) More than 30cm(11.8in) More than 60cm(23.6in) More than 70cm(27.6in) Note: The above drawing is only for reference. The appearance of your units may be different. Model 770(mm) 300(mm) -
Page 12: Refrigerant Cycle Diagram
Service Manual - SVH 09/12/18/24 Series 4. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) T1 Room temp. sensor T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE ACCUMULATOR COOLING... -
Page 13: Wiring Diagram
1/4in Ф12.7mm 1/2in 3500N.cm(357kgf.cm) 3600N.cm(367kgf.cm) B-SVH18SA-1 (Ф12.7mm) (Ф6.35mm) A-SVH24SA-1 5/8in 3/8in Ф15.9mm 5/8in 4500N.cm(459kgf.cm) 4700N.cm(479kgf.cm) B-SVH24SA-1 (Ф15.9mm) (Ф9.52mm) Ф19mm 3/4in 6500N.cm(663kgf.cm) 6700N.cm(683kgf.cm) 6.2 Connecting the cables Max. Standard Max. Additional The power cord should be selected according Models Length length... -
Page 14: Installation For The First Time
Service Manual - SVH 09/12/18/24 Series 6.4 Installation for the first time 5) Operate the vacuum pump to evacuate. 6) Make evacuation for 30 minutes and check Air and moisture in the refrigerant system have whether the compound meter indicates undesirable effects as below: -0.1Mpa(14.5Psi). -
Page 15: Re-Installation After The Indoor Unit Has Been Repaired
Service Manual - SVH 09/12/18/24 Series and press the check valve on the charge set to Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 purge the air (be careful of the liquid refrigerant). -
Page 16: Re-Installation After The Outdoor Unit Has Been Repaired
Service Manual - SVH 09/12/18/24 Series pumping 50 minutes, please check if there are some leakage points. Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump. Confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). -
Page 17: Operation Characteristics
Service Manual - SVH 09/12/18/24 Series 7. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode 17℃～32℃ 0℃～30℃ 10℃～32℃ Room temperature (62℉～90℉) (32℉～86℉) (50℉～90℉) °C °C ～50 °F °F ～122 °C °C °C °C Outdoor temperature ～30 ～50 °F °F °F °F... -
Page 18: Electronic Function
Service Manual - SVH 09/12/18/24 Series Drying mode. 8. Electronic Function Displays the self-diagnostic codes. 8.1 Abbreviation Displays ‘ ’ for three seconds when T1: Indoor room temperature Timer ON, Fresh, Swing, Turbo or Silence T2: Coil temperature of evaporator feature is activated. -
Page 19: Main Protection
Service Manual - SVH 09/12/18/24 Series 8.3 Main Protection function. 8.3.1 Three minute delay at restart for 8.3.7 Compressor preheating functions compressor Preheating permitting condition: Less than 1 minute delay for the first time When T4 (outdoor ambient temperature) ＜3° start-up and 3 minute delay for others. -
Page 20: Operation Modes And Functions
Service Manual - SVH 09/12/18/24 Series 8.4 Operation Modes and Functions 8.4.1 Fan mode ( 1) Outdoor fan and compressor stop. High (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/med/low/auto. - Page 21 Service Manual - SVH 09/12/18/24 Series ---TP3<T3< TP3+5, the compressor frequency Setting fan T1-Td ℃(°F) Actual fan speed speed will decrease to the lower level until to F1 H+(H+=H+G) H（=H） and then runs at F1. If TP3-3<T3< TP3, H-（H-=H-G) the compressor will keep running at the M+(M+=M+Z) current frequency.
- Page 22 Service Manual - SVH 09/12/18/24 Series Forced cooling mode: The compressor and outdoor fan keep running and the indoor fan runs at low speed. After TEstop running for 30 minutes, AC will turn to auto Decrease mode with 75°F setting temperature. TEdown Forced auto mode: Hold...
- Page 23 Service Manual - SVH 09/12/18/24 Series If AC is off before power off and AC is required 3 minutes, the buzzer will not respond. When to start up now, the compressor will have 1 the unit is running with follow me function, the minute delay when power on.
- Page 24 Service Manual - SVH 09/12/18/24 Series 8.4.14 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will sound for two seconds.
- Page 25 Service Manual - SVH 09/12/18/24 Series details are as follows. Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A value. Targeted 2. All the temperature is °C no matter what -19—99 -19—99 Frequency, kind of remote controller is used.
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Page 26: Troubleshooting
Service Manual - SVH 09/12/18/24 Series 9. Troubleshooting Safety Electricity is still kept in capacitors even when the power supply is shut off. Do not forget to discharge the electricity in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB. -
Page 27: Indoor Unit Error Display
Service Manual - SVH 09/12/18/24 Series 9.1 Indoor Unit Error Display Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error ☆ 3 times Zero-crossing signal detection error ☆... - Page 28 Service Manual - SVH 09/12/18/24 Series Troubleshooting: Use the remote controller. If the unit does not respond to the remote, the indoor PCB needs to be replaced; if the unit does respond, then the display board needs to be replaced.
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Page 29: Outdoor Unit Error Display (Tbd)
Service Manual - SVH 09/12/18/24 Series 9.2 Outdoor unit error display (TBD) For A-SVH09SA-0, A-SVH12SA-0... - Page 30 Service Manual - SVH 09/12/18/24 Series For A-SVH09SA-1, A-SVH12SA-1...
- Page 31 Service Manual - SVH 09/12/18/24 Series For A-SVH18SA-1, A-SVH24SA-1...
- Page 32 Service Manual - SVH 09/12/18/24 Series After power on, LED3 (Green color) and LED2 (Red color) will be flash if the unit has some problems. LED3 LED2 Problems IU display (Green) (Red) standby for normal Operation normally IPM malfunction or IGBT over-strong current protection ☆...
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Page 33: Diagnosis And Solution
Service Manual - SVH 09/12/18/24 Series 9.3 Diagnosis and Solution 9.3.1 EEPROM parameter error diagnosis and solution (E0/F4) E0/F4 Error Code Malfunction conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Possible causes Installation error ●... - Page 34 Service Manual - SVH 09/12/18/24 Series 9.3.2 Indoor / outdoor unit’s communication diagnosis and solution (E1) Error Code Malfunction conditions Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously. Possible causes Wiring error ●...
- Page 35 Service Manual - SVH 09/12/18/24 Series Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is running normally, the voltage will move alternately between -25V to 25V.
- Page 36 Service Manual - SVH 09/12/18/24 Series 9.3.3 Zero crossing detection error diagnosis and solution (E2) Error Code Malfunction conditions When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Possible causes Connection error ●...
- Page 37 Service Manual - SVH 09/12/18/24 Series 9.3.4 Fan speed has been out of control diagnosis and solution (E3) E3/F5 Error Code Malfunction conditions When indoor fan speed remains too low (300RPM) for certain time, the unit will stop and the LED will display the failure. Possible causes Wiring error ●...
- Page 38 Service Manual - SVH 09/12/18/24 Series Index 1: 1: Indoor or Outdoor DC Fan Motor (control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must be replaced.
- Page 39 Service Manual - SVH 09/12/18/24 Series 9.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution (E5) E4/E5/F1/F2/F3 Error Code Malfunction conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure. Possible causes Wiring error ●...
- Page 40 Service Manual - SVH 09/12/18/24 Series 9.3.6 Refrigerant Leakage Detection diagnosis and solution (EC) Error Code Malfunction conditions Define the evaporator coil temp. T2 of the compressor just starts running as Tcool. In the beginning 8 minutes after the compressor starts up, if T2 °F) Tcool－33.8 does not remain continuous for 4...
- Page 41 Service Manual - SVH 09/12/18/24 Series 9.3.6 Overload current protection diagnosis and solution (F0) Error Code Malfunction conditions An abnormal current rise is detected during self-check of the specified current detection circuit. Possible causes Power supply problems. ● System blockage ●...
- Page 42 Service Manual - SVH 09/12/18/24 Series 9.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0) Error Code Malfunction conditions When the voltage signal that IPM sends to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off. Possible causes Wiring error ●...
- Page 43 Service Manual - SVH 09/12/18/24 Series For example: Note: The photos below are only for reference, it may vary from your side.
- Page 44 Service Manual - SVH 09/12/18/24 Series...
- Page 45 Service Manual - SVH 09/12/18/24 Series...
- Page 46 Service Manual - SVH 09/12/18/24 Series 9.3.8 Over voltage or too low voltage protection diagnosis and solution (P1) Error Code Malfunction conditions An abnormal voltage rise or drop is detected when checking the specified voltage detection circuit. Possible causes Power supply problems. ●...
- Page 47 Service Manual - SVH 09/12/18/24 Series 9.3.9 High temperature protection of IPM module or compressor top diagnosis and solution (P2) Error Code Malfunction conditions If the sampling voltage is not 5V, the LED will display the failure. Installation error Possible causes ●...
- Page 48 Service Manual - SVH 09/12/18/24 Series 9.3.10 Inverter compressor drive error diagnosis and solution (P4) Error Code Malfunction conditions An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
- Page 49 Service Manual - SVH 09/12/18/24 Series IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester...
- Page 50 Service Manual - SVH 09/12/18/24 Series Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor.
- Page 51 Service Manual - SVH 09/12/18/24 Series Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073...
- Page 52 Service Manual - SVH 09/12/18/24 Series Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65...
- Page 53 Service Manual - SVH 09/12/18/24 Series 9ΔT(℃) ΔT(℉) = Appendix 3: °C °F °C °F °C °F °C °F °C °F 69.8 123.8 179.6 235.4 24.8 71.6 125.6 181.4 237.2 26.6 73.4 127.4 183.2 28.4 75.2 129.2 240.8 30.2 186.8 242.6 25.5 77.9...
- Page 54 Service Manual - SVH 09/12/18/24 Series 2. Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASN98D22UFZ ASM135D23UFZ ATF235D22UMT Blue - Red 1.75 Ω 0.75 Ω Blue - Black 1.57Ω Red - Blue...
- Page 55 Service Manual - SVH 09/12/18/24 Series 3. IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester...
- Page 56 Service Manual - SVH 09/12/18/24 Series 5. Pressure On Service Port Cooling chart: °F °C (23.89) (29.44) (35) (40.56) (46.11) 70/59 10.1 75/63 10.7 80/67 11.2 °F °C (23.89) (29.44) (35) (40.56) (46.11) 70/59 75/63 80/67 °F °C (23.89) (29.44) (35) (40.56) (46.11)
- Page 57 Service Manual - SVH 09/12/18/24 Series Heating Chart: 57/53 47/43 37/33 27/23 17/13 °F (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56) °C 30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9 57/53 47/43 37/33 27/23 17/13 °F (13.89/11.67) (8.33/6.11)
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Page 58: Disassembly Instructions
Service Manual - SVH 09/12/18/24 Series 10. Disassembly Instructions Note: This part is for reference, the photos may have slight difference from your machine. 10.1 Indoor unit 10.1.1 How to Remove the filter Step 1: Press the button on the both sides of the indoor unit. - Page 59 Service Manual - SVH 09/12/18/24 Series 10.1.3 How to Remove the panel assembly Step 1: Press the button on both sides of the indoor unit. Open the panel. Step 2: Press the button on both sides of panel. Remove the panel. 10.1.4 How to Remove the display box Step 1: Open the panel assembly, remove 1...
- Page 60 Service Manual - SVH 09/12/18/24 Series 10.1.5 How to Remove the PCB Step 1: Remove screw A,B,C,D,E. Step 2: Pull the lock A and B outward, then Grab C and D with two hands, so that the snap-fit inside can be disassembled, this is the key step for removing the frame.
- Page 61 Service Manual - SVH 09/12/18/24 Series Step 3: Remove screws A,B,C to remove the cover of the electronic cover and terminal cover . Step 4: Remove the cement of fan motor signal wire with a tool. Step 5: Disconnect the wires, the PCB can be seen and removed.
- Page 62 Service Manual - SVH 09/12/18/24 Series 10.1.6 How to remove the electrical control Step 1: Remove the 3 screws of earth wire. Step 2: Pull the lock upward to pull out the room temp. sensor . Step 3: Cut off the tie strap to pull out the coil temp.
- Page 63 Service Manual - SVH 09/12/18/24 Series Step 4: Remove screw A and B to remove the cover of the electronic cover and terminal cover. Then remove the screw C. Step 5: Pull out the electrical control box along the direction indicated in right image.
- Page 64 Service Manual - SVH 09/12/18/24 Series 10.1.7 How to Remove the Fan motor Step 1: The chassis is held by the installation plate and two snap-fit designs. Hold out against the A and B with two index fingers, and pull it away from the installation plate along the direction indicated in right image about 25 degree.
- Page 65 Service Manual - SVH 09/12/18/24 Series Step 4: Remove 3 screws shown in the pictures. Step 5: Hold out against the lock of fan motor with screwdriver, then pull to position A, and the evaporator can be removed.
- Page 66 Service Manual - SVH 09/12/18/24 Series Step 6: Remove the 2 screws on the cover of fan motor. Step 7: Rotate the cover of fan motor 90 degrees to remove it. Step 8: Remove the screw C, and the fan motor can be removed.
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Page 67: Outdoor Unit
Service Manual - SVH 09/12/18/24 Series 10.2 Outdoor Unit Note: This part is for reference, the photos may differ slightly from your machine. A-SVH09SA-0, A-SVH12SA-0, A-SVH09SA-1, A-SVH12SA-1 Part name Procedures Remarks Panel plate How to remove the panel Screws of top panel (3 screws,1 screws is under the big handle) plate. - Page 68 Service Manual - SVH 09/12/18/24 Series Fan assembly How to remove the fan ○ assembly. After removing the panel plate following procedure 1. 2) Remove the nut fixing the fan, and remove the fan. ○ 3) After removing the top cover, unfix the hooks and then open the electronic control box cover.
- Page 69 Service Manual - SVH 09/12/18/24 Series 4) Disconnect the connector for fan motor from the electronic control board. ④ ○ 5) Remove the four fixing screws of the fan motor, then remove the motor.
- Page 70 Service Manual - SVH 09/12/18/24 Series Electrical How to remove the parts electrical parts. After completing item 1 and item 2, remove the connector for the compressor. ○ Pull out the two blue wires connected with the four way valve. ○...
- Page 71 Service Manual - SVH 09/12/18/24 Series 4) Disconnect the electronic expansion valve ④ wire from the control board. 5) Remove the ground ○ ○ wires. 6) Remove the wires (1,2,3). 7) Then remove the electronic control box.
- Page 72 Service Manual - SVH 09/12/18/24 Series Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. ④ 1)Perform item 1,3. ○ 2) Recover refrigerant from the refrigerant circuit. 3) Remove the coil screw and then remove the coil.
- Page 73 Service Manual - SVH 09/12/18/24 Series A-SVH18SA-1 Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel (3 screws, 1 screw is under the big handler) 1) Stop operation of the air conditioner and 3 screws turn “OFF”...
- Page 74 Service Manual - SVH 09/12/18/24 Series Fan assembly How to remove the ○ fan assembly. 1) After removing the panel plate following procedure 1, remove the hex nut fixing the fan and then remove ○ the fan. 2) Unfix the hooks and compressor T3,T4,T5 sensor then open the electronic...
- Page 75 Service Manual - SVH 09/12/18/24 Series 3) Disconnect the ○ connector for fan motor from the electronic control board. ○ 4) Remove the four fixing screws of the fan motor. Then remove the fan motor. Electrical How to remove the parts ○...
- Page 76 Service Manual - SVH 09/12/18/24 Series ○ 3) Pull out connectors of the condenser coil temp. sensor (T3),outdoor ambient temp. sensor (T4) and discharge temp. sensor (T5). 4) Disconnect the ○ electronic expansion valve wire. 5) Remove the grounding screw. ○...
- Page 77 Service Manual - SVH 09/12/18/24 Series Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. ○ ○ 1) Complete item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the coil screw and then remove the coil.
- Page 78 Service Manual - SVH 09/12/18/24 Series A-SVH24SA-1 Part name Procedures Remarks Panel plate How to remove the panel plate. 1) Stop operation of 3 screws of top panel the air conditioner and turn “OFF” the power 3 screws of breaker. big handle 9 screws of front panel 2) Remove the top panel (3...
- Page 79 Service Manual - SVH 09/12/18/24 Series Fan assembly How to remove the fan assembly. ○ 1) After removing the panel plate perform the following procedure 1. Remove the hex nut fixing the fan and then remove the fan. ○ 2) After removing the top cover, unfix the hooks and then open the electronic control box...
- Page 80 Service Manual - SVH 09/12/18/24 Series 3) Disconnect the ○ connector for fan motor from the electronic control board. 4) Remove the four fixing ○ screws of the fan motor. Then remove the fan motor. Electrical How to remove the parts ○...
- Page 81 Service Manual - SVH 09/12/18/24 Series 2) Pull out the two blue ○ wires connected with the four way valve. ○ ○ 3) Pull out connectors of the condenser coil temp. sensor (T3), outdoor ambient temp. sensor (T4) and discharge temp. sensor (T5).
- Page 82 Service Manual - SVH 09/12/18/24 Series 5) Remove the electric ○ heaters. 6) Remove the grounding screw. 7) Remove the ⑥ Wires (1,2,3 or L1,L2,S). Then remove the electronic control box. ○...
- Page 83 Service Manual - SVH 09/12/18/24 Series Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Complete item 1,3. ④ ○ 2) Recover refrigerant from the refrigerant circuit. 3) Remove the coil screw and then remove the coil.
- Page 84 1900 Wellworth Ave., Jackson, MI 49203 • Ph. 517-787-2100 • www.marsdelivers.com 03/2017...
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