Change for life Service Manual Models: GRH085DA-K3NA1A(WIFI) GRH085DA-K3NA2B(WIFI) GRH120DA-K3NA1A(WIFI) GRH120DA-K3NA2B(WIFI) (Refrigerant R410A) GREE ELECTRIC APPLIANCES, INC.
Service Manual Table of Contents Part Ⅰ : Technical Information........................................................................1 1. Summary.......................................................................................................................1 2. Specifications...........................................................................................................2 3. Outline Dimension Diagram.........................................................................6 3.
Service Manual Part Ⅰ : Technical Information 1.
Service Manual 2. Specifications Model GRH085DA-K3NA1A(WIFI) GRH120DA-K3NA1A(WIFI) CU050000901 CU050001001 V~ 220-240 220-240 Hz 50 50 1 1 Cooling Capacity W 2500 3500 Heating Capacity W 2200 3200 Cooling Power Input W 1070 1270 Heating Power Input W 980 1180 Cooling Current Input A 4.7 5.6 4.2 5.2 W 1400 1400 Product Code Rated Voltage Power Supply Rated Frequency Phases Heating Current Input Rated Input A 6.6 8 EER Rated Current W/W 2.33 2.75 COP W/W 2.
Service Manual Fan Motor RLA Fan Motor Capacitor Outdoor Unit Air Flow Volume A 0.16 μF 1.5 1.5 m3/h 600/300 600/300 Aluminum Fin-copper Tube Aluminum Fin-copper Tube Evaporator Form Evaporator Pipe Diameter mm Φ7 Φ7 Evaporator Row-fin Gap mm 4-1.4 4-1.4 Evaporator Coil Length (LXDXW) mm Condenser Form 580.2X50.8X114.3 580.2X50.8X114.3 Aluminum Fin-copper Tube Aluminum Fin-copper Tube Condenser Pipe Diameter mm Φ7 Φ7 Condenser Rows-fin Gap mm 4-1.6 4-1.
Service Manual Model GRH085DA-K3NA2B(WIFI) GRH120DA-K3NA2B(WIFI) CU050001100 CU050001200 V~ 220-240 220-240 Hz 50 50 1 1 Cooling Capacity W 2500 3500 Heating Capacity W 2200 3200 Cooling Power Input W 1070 1270 Heating Power Input W 980 1180 Cooling Current Input A 4.7 4.7 4.2 4.2 W 1400 1400 Product Code Rated Voltage Power Supply Rated Frequency Phases Heating Current Input Rated Input Rated Current A 6.6 6.6 EER W/W 2.34 2.76 COP W/W 2.24 2.
Service Manual Fan Motor RLA Fan Motor Capacitor Outdoor Unit Air Flow Volume A 0.19 μF 1.5 1.5 m3/h 600/300 600/300 Aluminum Fin-copper Tube Aluminum Fin-copper Tube Evaporator Form Evaporator Pipe Diameter mm Φ7 Φ7 Evaporator Row-fin Gap mm 4-1.4 4-1.4 Evaporator Coil Length (LXDXW) mm Condenser Form 580.2X50.8X114.3 580.2X50.8X114.3 Aluminum Fin-copper Tube Aluminum Fin-copper Tube Condenser Pipe Diameter mm Φ7 Φ7 Condenser Rows-fin Gap mm 4-1.6 4-1.
Service Manual 3. Outline Dimension Diagram 3.
Service Manual 3.
Service Manual 4.
Service Manual 5. Electrical Part 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name WH White GN Green COMP Compressor YE Yellow BN Brown RD Red BU Blue / Grounding wire / YEGN Yellow/Green BK Black / / VT Violet OG Orange / / ● Indoor Unit GRH085DA-K3NA1A/I GRH120DA-K3NA1A/I 6: ',63 57 ',63 ',63 6: &1 $3 0 0 :,), 02'8/( &211(&725 <(*1 %8 %1 $3 67(33,1* 67(33,1* /(' 02725 02725 %2$5' 7(50,1$/ %/2&.
Service Manual GRH085DA-K3NA2B/I GRH120DA-K3NA2B/I ',63 ',63 &1 $3 :,), 02'8/( &211(&725 $3 10 57 287'225 81,7 $3 ',63/$< %2$5' 5220 6(1625 ',63/$< 02'8/( &211(&725 60000706023401 Technical Information
Service Manual ● Outdoor Unit GRH085DA-K3NA1A/O GRH120DA-K3NA1A/O 287'225 78%( 2875220 78%( 6(1625 6(1625 6(1625 <(*1 3( 3( 57 . :+ (/(&75,& %2; :$< 9$/9( 97 ,1'225 81,7 . %8 60000700013901 287B)$1 287B)$1 &203 &$3 :+ %8 3( ,1B)$1 $3 0$,1 %2$5' $& / 1 1 &1 :,),B&21 ',63 ',63 <(*1 97 :$< &1 %1 %8 0 <9 57 . 57 . %.
Service Manual 5.2 PCB Printed Diagram 5.2.1 Silk screen on main board ● Top view 1 2 3 4 5 6 7 8 11 No.
Service Manual 5.2.2 silk screen on display board GRH085DA-K3NA2B/I GRH120DA-K3NA2B/I ● Top view 2 3 1 No. 1 Name Interface of main board No. 2 Name Interface of lamp plate No.
Service Manual GRH085DA-K3NA1A/I GRH120DA-K3NA1A/I ● Top view 1 2 5 3 4 No. 1 4 Name Swing motor Display interface No. 2 5 Name Wire connection between boards Buzzer No.
Service Manual 6. Function and Control 6.1 Introduction of Control Panel GRH085DA-K3NA1A/I GRH120DA-K3NA1A/I Note: If the remote controller is missing, operate on the control panel. 2 1 4 Not available for cooling only model 3 1 6 ON/OFF button 4 5 5 Operation starts when pressing this button, and stops when pressing this button again. 2 SWING button MODE button Select the operation mode, COOL, DRY, FAN, HEAT (for heat pump model) or COOL, DRY, FAN (for cooling only model).
Service Manual GRH085DA-K3NA2B/I GRH120DA-K3NA2B/I HEAT FAN, HEAT.
Service Manual 6.2 Introduction of Remote Controller Note: This remote controller is the universal remote controller. Some function is not available for this unit.
Service Manual 1. ON/OFF button Press this button to select your required operation mode. 2. MODE button Press this button, Auto, Cool, Dry, Fan, Heat mode can be selected circularly. Auto mode is default while power on. Under Auto mode, the temperature will not be displayed;Under Heat mode, the initial value is 28℃ (82 ℉ ); Under other modes, the initial value is 25℃ (77 ℉ ). (Only for cooling and heating unit.
Service Manual 10. TEMP button Press this button, could select displaying the indoor setting temperature or indoor ambient temperature. When the indoor unit firstly power on it will display the setting temperature, if the temperature's displaying status is changed from other status to " ", displays the ambient temperature, 5s later or within 5s, it receives other remote control signal that will return to display the setting temperature.
Service Manual Operation guide 1. Press SLEEP button, to set sleep. 2. Press TIMER ON and TIMER OFF button, can set the scheduled timer on or timer off. 3. Press LIGHT button, to control the on and off of the displaying part of the unit (This function may be not available for some units). 4. Press TURBO button, can realize the ON and OFF of TURBO function. 5. Press LED button,can open or close the light on the panel. Replacement of batteries in remote controller 1.
Service Manual 6.3 Brief Description of Modes and Functions 1. Target Recreational Vehicles 2. Basic Functions 2.1 Cooling 2.1.1 Operating conditions and procedures a) Tinner amb ≥ Tpreset +1℃ (2 ℉ ), cooling mode: compressor cycles on, fan motors will operate in set speed. b) Tinner amb ≤Tpreset -1℃ (2 ℉ ), compressor and outdoor fan motors cycle off, indoor fan motor will operate in set speed. c) Tpreset -1℃ (2 ℉ ) < Tinner amb < Tpreset +1℃ (2 ℉ ), operates like before. 2.1.
Service Manual b. When unit is on and under Auto mode, the Fan Speed indicator will turn on while tube shows the set temperature. The temperature can’t be adjusted; c. Under Fan Only mode, the Fan indicator and the Fan Speed indicator will turn on; d. Under Dehumidifying mode, the Dehumidifying indicator will turn on; e. When fan speed is at low, medium, high or super high, lights will turn on respectively. f. For unit without WIFI function, When Delay Timer is on, the Delay Timer light will turn on.
Service Manual dehumidifying mode, the dual-8 nixie tube shows E8. 3.9.7 Defrosting’ malfunctions detected For ensusing heating effect, air conditioner will defrost automatically according to defrosting status on outdoor unit. Dual-8 nixie tube displays H1 during defrosting. 4. Troubleshooting 4.1 Problem1: air conditioner does not start and the buzzer does not ring What to do: check the air conditioner plug or replace the controllers. 4.
Service Manual 6.4 GREE+ App Operation Manual Control Flow Chart Internet Gree intelligent home appliances Gree Cloud Cellular/ Other Wi-FI Home Wi-Fi Home wireless router Home Wi-Fi GREE+ APP Operating Systems Requirement for User's smart phone: iOS system Support iOS7.0 and above version Android system Support Android 4.4 and above version Download and installation GREE+ App Download Linkage Scan the QR code or search "GREE+" in the application market to download and install it.
Service Manual 6.5 Ewpe Smart App Operation Manual Control Flow Chart Internet intelligent home appliances Cloud Cellular/ Other Wi-FI Home Wi-Fi Home wireless router Home Wi-Fi APP Operating Systems Requirement for User's smart phone: iOS system Support iOS7.0 and above version Android system Support Android 4.4 and above version Download and installation App Download Linkage Scan the QR code or search "Ewpe Smart" in the application market to download and install it.
Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: Important! Please read the safety precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance. Please follow the instructions below. ●The installation or maintenance must accord with the instructions. ●Comply with all national electrical codes and local electrical codes.
Service Manual connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury. ●Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas. If there leaked gas around the unit, it may cause explosion and other accidents. ●Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service center authorized and ask for a proper electric wire.
Service Manual 8. Installation BEFORE INSTALLATION Testrun the unit with proper power supply. Refer to the operation instruction section in the Owner’s Manual Operation & Installation. Make sure all the controls operate correctly then disconnect the power supply of the unit. conditioner and the interior ceiling assembly. 2.
Service Manual NOTE AIR CONDITIONER DIMENSIONS (ROOF OF UNIT) 1018 356 (542 ) 650 576 356x356 OPENING 120 356 STEP 2-MOUNTING OUTDOOR UNIT 1. Open the package and take out the outdoor unit. 1) When taking out the outdoor unit after unpacking, do not lift the air outlet grille at the back of outer case(see Figure4-1). 2. Fix the outdoor unit at the roof of vehicle and then drill holes.
Service Manual Frame Bottom Duct Plate (30mm) Frame Fabric Duct Junction Box 4 Screws (30mm) Cover Figure 7 2 Screws Figure 6 Power Cord Ground Wire Come From Roof Power Supply (Yellow-Green Wire) Top Air Cord Conditioner Please pay attention to match the gap with the riveted nut during installation Strain Relief (Clamp) Figure 6-1 Blue Wire Figure 8 Brown Wire Control Line Comes From Roof Top Air Conditioner STEP 4-ELECTRICAL WIRING Display Box of Ceiling Assembly ROUTING 220-240V AC WIR
Service Manual STEP 5-COMPLETING THE INSTALLATION To complete the installation and system checkout requirements, the following steps must be performed. 1.Check the thermostat position. Make sure the thermostat is routed through the holding guide and is not touching any metal surface. 2.Make sure the guide louver and the filters are properly positioned in the ceiling grille. 3.Secure the ceiling grille to the ceiling assembly frame with 4 screws.(see Figure 10). 4.Install screw caps into four screw holes.
Service Manual GRH085DA-K3NA2B/I CAUTION GRH120DA-K3NA2B/I STEP 1-SELECTING AN INSTALLATION LOCATION & INSTALLINGTHE ROOF TOPAIR CONDITIONER Your air conditioner has been designed for use in recreational vehicles. Check the roof of the vehicle to determine if it can support both the roof top unit and the ceiling assembly without additional support. Make sure the interior ceiling mounting area will not interfere with existing structures. Once the location for your air conditioner has been determined.
Service Manual Thickness of vehicle roof is from 30mm-80mm STEP 2-MOUNTING OUTDOOR UNIT installtion board Gasket 1. Open the package and take out the outdoor unit. 1) When taking out the outdoor unit after unpacking, do not lift the air outlet grille at the back of outer case(see Figure4-1). 2. Fix the outdoor unit at the roof of vehicle and then drill holes.
Service Manual STEP 4-ELECTRICAL WIRING ROUTING 220-240V AC WIRING WARNING Make sure that all power supply to the unit is disconnected before performing any work on the unit to avoid the possibility of shock or injury and/or damage to the equipment. After the interiorceiling assembly frame is properly secured to the roof top air conditioner, the following electrical connections must be performed. 1. As shown in fig.
Service Manual 9. Maintenance 9.1 Error Code No. Malfunction Name Display Method of Indoor Unit (Error Code) Indoor ambient temperature 1 sensor is open/ shortcircuited 2 Indoor evaporator temperature sensor is open/shortcircuited Outdoor ambient 3 temperature sensor is open/ shortcircuited F1 F2 F3 4 Outdoor condenser temperature sensor is open/shortcircuited F4 5 Insufficient fluorine protection F0 A/C Status Possible Causes 1.
Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1~ F4 Start Is the wiring terminal between temperature sensor and the controller loosened or poo rly contacted? yes Insert the temperature sensor tightly no no Is there short circuit due to tri-pover of the pa rts? Malfunction is eliminated. yes Make the parts upright no no Is the temperature sensor normal according to the Resistance Table? Malfunction is eliminated.
Service Manual 2.
Service Manual 3. Overload malfunction E8 (6) Overload malfunc on E8 Troubleshooting for E8 malfunction Whether the environment is formidable Yes No Heat exchangers are too dirty or the air inlet/outlet is blocked. Yes Yes Yes No Malfunction is eliminated. Yes Check motor and re-install the moto to make it run normally. Malfunction is eliminated. Yes Make compressor run normally. Malfunction is eliminated. Yes No Yes No Temperature sensor of main board can't detect correctly.
Service Manual (4) Malfunction of Insufficient fluorine protection 4. Malfunction of Insufficient fluorine protection F0 F0 Troubleshooting for F0 malfunction Heat exchangers are too dirty or the air inlet/outlet is blocked. Yes No Compressor doesn't work normally. Strange noise or leakage occurs. Casing is too hot. Yes No Yes Make compressor run normally. Malfunction is eliminated. Yes No Yes No The refrigerant is leaking Malfunction is eliminated.
Service Manual Overload malfunction (5) 5. Malfunction of Overload H3 protection for compressor H3 Troubleshooting for H3 malfunction Heat exchangers are too dirty or the air inlet/outlet is blocked. Yes No Fan motor doesnt work at a normal fan speed; fan speed is too low or the fan doesnt run Yes Yes No Check motor and re-install the moto to make it run normally. Malfunction is eliminated. Yes Make compressor run normally. Malfunction is eliminated.
Service Manual 6. Overload malfunction PL Start Check whether the power supply voltage is lower than 184V? no yes Cut off the power and confirm the supply power is not lower than 184V. After that, put through the power again.
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit GRH085DA-K3NA1A/I GRH120DA-K3NA1A/I The component picture is only for reference; please refer to the actual product.
Service Manual NO.
Service Manual GRH085DA-K3NA2B/I GRH120DA-K3NA2B/I 1 2 3 4 20 5 19 6 18 7 17 16 8 15 9 14 10 11 12 13 The component picture is only for reference; please refer to the actual product.
Service Manual NO.
Service Manual 10.2 Outdoor Unit GRH085DA-K3NA1A/O GRH120DA-K3NA1A/O The component picture is only for reference; please refer to the actual product.
Service Manual Description NO.
Service Manual GRH085DA-K3NA2B/O GRH120DA-K3NA2B/O 2 1 29 28 3 27 4 26 5 25 6 7 8 9 24 10 23 22 21 20 19 18 17 16 11 12 13 14 15 The component picture is only for reference; please refer to the actual product.
Service Manual Description NO.
Service Manual 11. Removal Procedure 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. GRH085DA-K3NA1A/I GRH120DA-K3NA1A/I Step Procedure 1.Remove panel Remove 4 screws on panel, disassemble the butted terminal, separate panel and installation plate, and then remove the panel. installation plate panel ceiling 2. Remove installation plate Remove screws fixing the pressing plate, and then remove the press plate.
Service Manual Step Procedure 3. Remove knob, air vent cover 1 and air vent cover 2 sub-assy air vent cover 2 sub-assy air vent cover 1 sub-assy Loosen the clasps on knob, and then remove knob, air vent cover 1 and air vent cover 2. knob 4. Remove left and right filters sub-assy Remove left and right filters sub-assy directly. left filter sub-assy right filter sub-assy 5. Remove guide rail of filter Remove screws fixing the guide rail of filter, and then remove the guide rail of filter.
Service Manual Step Procedure 6. Remove display board sub-assy display box cover sub-assy Remove screws fixing the display box sub-assy, and then remove the display box sub-assy cover. Remove screws fixing the detecting plate, and then remove the detecting plate. Detecting Plate tob cover Remove 6 screws fixing the display board, pull display board out the motor terminal and then remove the display board. 7.
Service Manual Step Procedure 8. Remove swing motor assy swing motor assy Remove screws fixing the swing motor assy, and then remove the swing motor assy. 9. Remove damper sub-assy damper sub-assy Remove the damper sub-assy directly. 10. Remove horizontal louver sub-assy horizontal louver sub-assy Remove horizontal louver sub-assy directly.
Service Manual GRH085DA-K3NA2B/I GRH120DA-K3NA2B/I Step Procedure 1.Remove air-in grille and the filter Press both ends of air-outlet grille to unlock the door switch and then remove the air-in grille and the filter. 2. Remove front panel sub-assy Loose 4 screws at both ends and then remove the panel sub-assy downwards. 3. Remove air duct sub-assy Loose 4 bolts as shown in the figure and then remove the air duct sub-assy downwards.
Service Manual Step Procedure 4. Remove base plate and the middle air-outlet panel clasp Loose 2 screws at both ends; loose 7 clasps at both sides and then separate the base plate and the middle air-outlet panel. clasp clasp 5. Remove detecting board Loose 1 screw on the top; remove the detecting board. 6. Remove display board Loose 2 screws as shown in the figure and the remove the display board.
Service Manual Step Procedure 7.Remove display module Loose 1 screw as shown in the figure, and rotate the display module in clockwise direction to remove it. 8. Remove air-outlet frame sub-assy clasp clasp Loose 9 clasps as shown in the figure and then remove the air-outlet frame sub-assy outwards. 9. Remove guide louver and shaft of guide louver clasp Loose the middle clasp, remove the horizontal louver outwards and then remove the shaft of horizontal louver at both ends.
Service Manual 11.2 Removal Procedure of Outdoor Unit Step Procedure 1. Outdoor unit diagram clasp 2.Remove outer case screws Press the tool which is suitable for the size of clasp center hole into about 3mm from the center point fixing outer case clasp; pluck out the clasp forcibly; remove screws fixing outer case.
Service Manual Step Procedure 3.Remove plastic box (electric box) Lift the plastic box upwards to remove it. plastic box (electric box) 4.Remove foam sub-assy Remove screws fixing the foam sub-assy and then remove the foam sub-assy. foam sub-assy 5.Remove top cover (dark grey) top cover (dark grey) Remove screws fixing the top cover and then remove the top cover.
Service Manual Step Procedure 6.Remove electric box cover electric box cover Remove screws fixing electric box cover and then remove the electric box cover; cut off the wire binder. 7.Remove electric box assy, controller mainboard controller mainboard Remove screws fixing the electric box assy and then lift the electric box assy to remove electric box assy it.
Service Manual Step Procedure 9.Remove water baffle sub-assy water baffle sub-assy Remove screws fixing the water baffle subassy; cut off the connected wire binder and then remove the water baffle sub-assy. 10.Remove capillary sub-assy pipe clip Remove screws fixing the pipe clip and pipe pipe fixed block fixed block; remove the pipe clip and pipe fixed block connected with the capillary.
Service Manual Step Procedure 11.Remove 4-way valve assy 4-way valve assy Unsolder the welding joint connecting the 4-way valve assy and then unsolder the 4-way valve assy. Note: Before unsoldering the welding joint connecting the 4-way valve, wrap the 4-way valve assy with a wet cloth completely to avoid damage to the valve caused by high temperature. 12.
Service Manual Step Procedure 14.Remove rubber block (motor wire) rubber block (motor wire) Remove the rubber block (motor wire) directly. 15.Remove centrifugal fan assy ① ① centrifugal fan assy ② Remove screws fixing the centrifugal fan assy; rotate the motor base anti-clockwise to remove the centrifugal fan assy. 16.
Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit display Celsius（℃） temperature （℉） （℉） 61 60.8 16 62/63 62.6 17 64/65 64.4 18 66/67 66.2 19 68 68 20 Fahrenheit Fahrenheit display Celsius（℃） temperature （℉） （℉） 69/70 69.8 21 71/72 71.6 22 73/74 73.4 23 75/76 75.
Service Manual Appendix 2: List of Resistance for Ambient Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) 64 Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) -19 138.1 20 18.75 59 3.848 98 1.071 -18 128.6 21 17.93 60 3.711 99 1.039 -17 -16 121.6 22 17.14 61 3.579 100 1.009 115 23 16.39 62 3.454 101 0.98 -15 108.7 24 15.68 63 3.333 102 0.952 -14 102.
Service Manual Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(20K) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) -19 181.4 20 25.01 59 5.13 98 1.427 -18 171.4 21 23.9 60 4.948 99 1.386 -17 162.1 22 22.85 61 4.773 100 1.346 -16 153.3 23 21.85 62 4.605 101 1.307 -15 145 24 20.9 63 4.443 102 1.269 -14 137.2 25 20 64 4.289 103 1.233 -13 129.9 26 19.14 65 4.14 104 1.
