Page 1: Table Of Contents
PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. DO NOT BYPASS SAFETY DEVICES. RS6115001r13 March 2023 © 2019-2023 Daikin Comfort Technologies Manufacturing, L.P. is a registered trademark of Maytag Corporation or its related companies and is used under license. ® All rights reserved.
Page 2: Important Information
IMPORTANT INFORMATION WARNING CHECKING COMPRESSOR EFFICIENCY ....21 To prevent the risk of property damage, personal injury, or death, do not store combustible materials or use gasoline THERMOSTATIC EXPANSION VALVE ..... 21 or other flammable liquids or vapors in the vicinity of this OVERFEEDING ............
Page 3 IMPORTANT INFORMATION WARNING System contaminants, improper service procedure and/or physical abuse affecting hermetic compressor electrical WARNING terminals may cause dangerous system venting. NOTICE: When the outdoor unit is connected to main To avoid possible explosion: • Never apply flame or steam to a refrigerant cylinder. If power, the inverter board has a small current flowing into you must heat a cylinder for faster charging, partially it to be prepared for operation when needed.
Page 4: Product Identification
PRODUCT IDENTIFICATION NOMENCLATURES 7, 8 Minor Revision Brand B: 1st Revision A: Amana® Brand Major Revision Product Category S: Split System R-410A B: 1st Revision Unit Type Electrical X: Condenser 1 - 208/230 V, 1 Phase, 60 Hz Z: Heat Pump Feature N: Value C: Premium...
Page 5 PRODUCT IDENTIFICATION NOMENCLATURES 11,12 Minor Rev Brand A - Corporate Air Handler Major Rev C - Ceiling Mounted Electric Heat kW W - Wall Mounted Motor Refrigerant S - MS-ECM 4 - R410A Expansion Device Electrical E - Electronic Expansion Valve 1 208/230 V, 1 Phase 60Hz F - Flowrator Cabinet...
Page 6: System Operation
SYSTEM OPERATION for demonstration purposes only. Actual temperatures and pressures are to be obtained from the “Expanded Performance Chart”. This section gives a basic description of Air Conditioner condenser unit operation, its various components and their Liquid refrigerant at condensing pressure and temperatures basic operation.
Page 7 SYSTEM OPERATION • Setting the Charge mode menu of mode display screen-4 to ON through the outdoor unit control board push buttons. Once selected, it checks the equipment for approximately 5 • Through the CoolCloud HVAC phone application. - 15 minutes. System test may exceed 15 minutes if there is b.
Page 8 SYSTEM OPERATION FAULT CODE HISTORY The Air Conditioner’s diagnostics menu provides access to setup. This allows the cooling system to further reduce the most recent faults. The six most recent faults can be ac- humidity by lowering the temperature up to 3°F below the cessed through the control board seven segment displays cooling setpoint in an attempt to better achieve desired or the CoolCloud mobile app.
Page 9 SYSTEM OPERATION • Profile B ramps up to full cooling demand airflow by first stepping up to 50% of the full demand for 30 sec- onds. The motor then ramps to 100% of the required Before starting the PUMP DOWN operation, change indoor airflow.
Page 10 SYSTEM OPERATION NOTE: In high humidity environments, sweating on supply ducts, cased coils or air handler cabinets can become an issue in Enhanced Dehumidification operation. It is strongly recommended covering then with 2” fiberglass insulation for 1) At Cool and Heat Hi speed trim, *SXV906010** with these installations.
Page 11 SYSTEM OPERATION COOLING CYCLE Piping Diagram with TXV applicable indoor unit HP/LP Reversing Valve HP/LPs ensor Ball Valve (Gas) Ta Thermistor Check valve separator Td Thermistor Motor Motor Thermistor Filter Accumulator Compressor Capillaryt ube Stop Check Valve valve Filter (Liquid) dryer Filter Filter...
Page 12 SYSTEM OPERATION COOLING CYCLE LEGEND: Tli = Thermistor (Indoor Liquid Temperature) Tl = Thermistor (Outdoor Liquid Temperature) Tgi = Thermistor (Indoor Gas Temperature) Td = Thermistor (Discharge Temperature) ID HP/LP sensor = Indoor High/Low Pressure Sensor Ta = Thermistor (Outdoor Air Temperature) OD HP/LP sensor = Outdoor High/Low Pressure Sensor Tm = Thermistor (Outdoor Coil Temperature) HPS = High Pressure Switch...
Page 13: Servicing
SERVICING THERMOSTAT AND WIRING CHECKING VOLTAGE WARNING 1. Remove outer case, control panel cover, etc., from unit Line voltage now present. being tested. With power ON: With power ON, thermostat calling for cooling/heating. 1. Use a voltmeter to check for 24 volt at thermostat wires WARNING C and R in the indoor unit control panel.
Page 14: Comfortbridge™ System Wiring
SERVICING With power ON: WARNING COMFORTBRIDGE™ SYSTEM WIRING Line voltage now present. ComfortBridge™ control system is low voltage wiring con- sists of two wires between the indoor unit and outdoor unit. 2. Using a voltmeter, check voltage across secondary volt- The required wires are data lines 1 and 2.
Page 15: Resistance Check (5 Ton Only)
SERVICING WARNING The HI/LOW pressure sensor senses the suction pressure Discharge capacitor through a 20 to 30 OHM resistor before in cooling mode, and the discharge pressure in heating handling. mode. Follow the following sequence to check the pressure sensor. 1.
Page 16: Checking Compressor
SERVICING 1. Remove the leads from the compressor terminals. 2. Using a Megometer, attach one lead to ground. 3. Using the other lead of the Megometer, check the insula- CHECKING COMPRESSOR tion between U to ground, V to ground, W to ground. Unpainted WARNING Refrigerant...
Page 17: Testing Crankcase Heater (5 Ton Only)
SERVICING To check above sensors: WARNING HIGH VOLTAGE Disconnect all power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. 1. Disconnect power to the Air Conditioner condensor. 2.
Page 18: Refrigeration Repair Practice
SERVICING b. Green receive LED – Indicates network traffic. Refer to the Network Troubleshooting Chart for the LED status and the corresponding potential problem. 1. Turn on power to air handler or modular. c. Learn button – Used to reset the network. Depress the button for approximately 2 seconds to reset the network.
Page 19: Leak Testing (Nitrogen Or Nitrogen-Traced)
SERVICING IMPORTANT NOTE: Because of the potential damage to compressors, do not allow suction pressure at service valve to drop below 5 PSIG when pumping unit system down for Copper to Copper Joints - Sil-Fos used without flux (alloy repair. Outdoor section, depending on line set length and of 15% silver, 80% copper, and 5% phosphorous).
Page 20: Charging
SERVICING CHARGING If pressure rises above 1000 microns but holds steady WARNING below 2000 microns, non-condensable air or moisture may remain or a small leak is present. Return to step 2: If the REFRIGERANT UNDER PRESSURE! same result is achieved check for leaks and repair. Repeat •...
Page 21: Checking Compressor Efficiency
SERVICING by the feeler bulb, (2) evaporator pressure, and (3) the equivalent pressure of the superheat spring in the valve. 0% bleed type expansion valves are used on indoor and After system has stabilized per startup instructions, check outdoor coils. The 0% bleed valve will not allow the system subcooling as detailed in the following section.
Page 22: Checking Subcooling
SERVICING 4. Review the technical information manual or specification sheet for the model being serviced to obtain the design subcooling. CHECKING SUPERHEAT 5. Compare the hi-pressure reading to the “Required Liquid Line Temperature” chart. Find the hi-pressure value on Refrigerant gas is considered superheated when its tem- the left column.
Page 23: Checking Thermostatic Expansion Valve Operation
SERVICING SUBCOOLING ADJUSTMENT ON EEV APPLICATIONS NOTE: Subcooling information is valid only while the unit is NOTE: Subcooling and superheat information is valid only operating at 100% capacity or 100% compressor speed in while the unit is operating at 100% capacity or 100% com- CHARGE MODE.
Page 24: Compressor Burnout
SERVICING REFRIGERANT PIPING The piping of a refrigeration system is very important in Non-condensables are removed from the system by first relation to system capacity, proper oil return to compressor, removing the refrigerant charge, replacing and/or installing pumping rate of compressor and cooling performance of liquid line drier, evacuating and recharging.
Page 25 SERVICING Hanger Wall Liquid Line Stud Strapped to Suction Line Liquid Line Metal Sleeve Suction Line Wrapped in Armaflex ® FIGURE 1-1. INSTALLATION OF REFRIGERATION PIPING FROM VERTICAL TO HORIZONTAL IMPORTANT - Refrigerant lines must not touch wall. Suction Line Liquid Line Outside Wall Wood Block...
Page 26 SERVICING If hanging line set from a joist or rafter, use metal strapping Wire Tie or heavy nylon wire tires (around suction line only) that are securely anchored. 8’ Floor Joist or T ape or Wire Tie Roof Rafter 8’ Floor Joist or Roof Rafter Metal Sleeve Strapping placed...
Page 27 SERVICING Oil Trap Construction LONG RADIUS STREET ELL 45° 45° STREET SHORT RADIUS STREET ELL SECTION 4. OUTDOOR UNIT IS BELOW THE INDOOR UNIT NOTE: If Height difference between Condenser and Evaporator is more than 15 ft, then refer to these diagrams. 1.
Page 28: Duct Static Pressures And/Or Static Pressure Drop Across Coils
SERVICING If external static pressure is being measured on a furnace to determine airflow, supply static must be taken between the “A” coil and the furnace. DUCT STATIC PRESSURES AND/OR STATIC PRESSURE DROP ACROSS COILS This minimum and maximum allowable duct static pres- sure for the indoor sections are found in the specifications section.
Page 29 SERVICING For example, assume the system is an outdoor unit matched with an indoor unit. With a call for cooling, the out- door unit will calculate the system’s cooling airflow demand. • Measure static pressure of the return duct at the inlet The outdoor unit will then send a fan request along with the of the furnace cooling airflow demand to the indoor unit.
Page 30 SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) COMMUNICATING BOARD AUXILIARY ALARM SWITCH CIRCULATOR BLOWER The control is equipped with two Auxiliary Alarm terminals, This air handler is equipped with a variable speed circulator labeled CAS, which are typically utilized in series with a blower.
Page 31 SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) 19 kW or 15 kW 10 kW 8 kW 6 kW 5 kW 3 kW 20 kW (Factory Setting) Electric Heating Air Flow (*indicates factory setting) NOTE: Upon start up in communicating mode the circuit board may display an “Ec” error. This is an indication that the dip switches on the control board need to be configured in accordance with the Electric Heating Airflow Table.
Page 32 SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) 7 SEGMENT LED DESCRIPTIONOFCONDITION (characters will alternate) (nodisplay) INTERNAL CONTROL FAULT / NO POWER STANDBY, WAITING FOR INPUTS HEATER KIT TOO LARGE, TOO SMALL, OR NO MATCH FUSE OPEN AUXILIARY SWITCH OPEN DATA NOT ON NETWORK INVALIDDATAONNETWORK INVALID Bluetooth®...
Page 33 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 34 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 35 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 36 SERVICING INDOOR UNIT ERROR CODES INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1)
Page 37 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT WARNING HIGH VOLTAGE Disconnect all power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. INDOOR UNIT CONTROL BOARD AUXILIARY ALARM SWITCH proper fault codes.
Page 38 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT NOTE: Upon start up in communicating mode the circuit Refer to the Troubleshooting Chart at the end of this man- board may display an “Ed” error. This is an indication that ual for assistance in determining the source of unit oper- the dip switches on the control board need to be configured ational problems.
Page 39 SERVICING DIAGNOSTIC CODES TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT DIAGNOSTIC CODES 7 SEGMENT LED DESCRIPTION OF CONDITION DISPLAY Normal Operation NO HTR KIT INSTALLED - SYSTEM CALLING FOR AUXILIARY HEAT (Minor Error Code) HEATER KIT DIP SWITCHES NOT SET PROPERLY FUSE OPEN AUXILIARY SWITCH OPEN DATA NOT ON NETWORK...
Page 40 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 7 Segment LED Description of Condition 2-digit 7 segment displays Display (State) (No Di s pl a y) INTERNAL CONTROL FAULT/NO POWER STANDBY, WAITING FOR INPUTS FAN COOL-COMMUNICATING MODE ONLY (Aux Hea t Dema nd) FAN HEAT-COMMUNICATING MODE ONLY (Aux Hea t Dema nd) FAN ONLY (Fa n Dema nd-Ma nua l )
Page 41 SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 2-digit 7 segment displays 3. When the unit is havingsome minor error code in normalmode,2-digit 7 segmentdisplaysshow error code and airﬂowstatus. 2. Error code 3. Airﬂow 4. When the unit is havingsome minor error code during defrost opera�onin normalmode, 2-digit 7 segmentdisplaysshow state “dF”, error code and airﬂowstatus.
Page 42: Indoor Unit Setting The Mode Display
SERVICING SETTING THE MODE DISPLAY TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT...
Page 43 SERVICING SETTING THE MODE DISPLAY TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT...
Page 44 SERVICING INDOOR UNIT (AMVE**) ERROR CODES...
Page 45 SERVICING INDOOR UNIT (AMVE**) ERROR CODES...
Page 46 SERVICING AIR CONDITIONER ADVANCED FEATURE MENU HEAT PUMP / FAULT CODE HISTORY SUBMENU ITEM INDICATION/USER MODIFIABLE OPTIONS COMMENTS (The Active and History Fault codes are displayed.) Active fault code and up to 6 fault code histories. ACTIVE (The Active Fault codes are displayed.) Active fault code only.
Page 47 SERVICING AIR CONDITIONER ADVANCED FEATURE MENU HEAT PUMP / DEVICE SETTING (1) SUBMENU ITEM INDICATION(Units) COMMENTS BOOST MODE is ON by default. See BOOST MODE BOOST MODE ENABLE OFF or ON section of this manual for more details. If enabled, when the ambient outdoor temperature is greater than this selected value, boost mode will be operational.
Page 48 SERVICING AIR CONDITIONER ADVANCED FEATURE MENU AIR CONDITIONER / DEVICE SETTING (2) SUBMENU ITEM INDICATION(Units) COMMENTS Selecting "OFF" disables dehumidification selecting. Standard, OFF, A, B or C DEHUMIDIFICATION ENABLE "Standard", "A", "B" or "C" enables dehumidification. Selecting yes will reset any cooling setting to their RESET COOLING SETTINGS NO or YES factory defaults.
Page 49 SERVICING EMERGENCY MODE FOR EEV APPLICABLE INDOOR 1. HEATING EMERGENCY MODE UNIT Emergency Heating mode is to be used when communica- tion between the indoor unit and thermostat is not func- WARNING tioning properly. This mode will run the electric heat strips independently of any thermostat in one of two modes: High Heat Level or Low Heat Level.
Page 50 SERVICING Upon start up in emergency mode the circuit board may display an “Ed” error. This is an indication that the DIP switches on the control board need to be configured in accordance with the Electric Heating Airflow Table. Configuring the DIP switches to the unit will clear the error code.
Page 51 SERVICING Avg. ON time OFF time Run Time 2. COOLING EMERGENCY MODE Low Cool 7 minutes 15 minutes Level Cooling emergency mode is to be used when communica- tion between the indoor and outdoor units is not functioning Medium properly and temporary cooling operation is required. This 8 minutes 10 minutes Cool Level...
Page 52 SERVICING TROUBLESHOOTING- OUTDOOR UNIT AND INDOOR UNIT FOR EEV APPLICABLE UNIT Dipswitch Default Factory Se�ngs Switch # Se�ng Func�on No Use No Use ID DS-1 No Use No Use No Use No Use ID DS-2 No Use No Use Heater Kit Selec�on in Emergency Mode Heater Kit Selec�on in Emergency Mode ID DS-3 Heater Kit Selec�on in Emergency Mode...
Page 53 SERVICING COOLING EMERGENCY MODE WIRING FOR TXV AP- PLICABLE INDOOR UNIT Cooling emergency mode is available when using a TXV applicable indoor unit. To energize the blower at the appro- priate speed, standard Legacy wiring is required. The image below shows how the thermostat input terminals are to be wired when selecting a cooling airflow.
Page 54: Outdoor Unit Setting The Mode Display
SERVICING OUTDOOR UNIT - SETTING THE MODE DISPLAY MODE DISPLAY INTRODUCTION A 3-digit display is provided on the Control board as a backup tool to the thermostat for reading faults, fault history, monitoring and setting up the unit. Follow the information provided in this section to learn how to use the mode display.
Page 55 SERVICING OUTDOOR UNIT - SETTING THE MODE DISPLAY NAVIGATING THROUGH THE DISPLAY SCREENS SCREEN The home or default screen on the display. This shows the most recent fault. SCREEN 1 To access, hold the RECALL button for 5 seconds at screen 0. SCREEN 2 To access, hold the RECALL button for 5 seconds at screen 1.
Page 56 SERVICING OUTDOOR UNIT - SETTING THE MODE DISPLAY FAULT CODE HISTORY NAVIGATION < SCREEN 1> This mode will allow the user to see the six most recent system faults. For a list of the fault codes, please see the TROUBLESHOOTING tables in this document. <...
Page 57 SERVICING OUTDOOR UNIT - SETTING THE MODE DISPLAY MONITORING MODE NAVIGATION < SCREEN 0 > < SCR EEN 2 > This screen allows the user to monitor system variables as shown in the tables at the end of this section. Blink interval: <...
Page 58 SERVICING OUTDOOR UNIT - SETTING THE MODE DISPLAY SETTINGS MODE 1 NAVIGATION < SCREEN 3 > < SCREEN 0 > Setting Mode 1 allows the user to adjust system settings as shown in the tables at the end of this section. Blink interval: <...
Page 59 SERVICING OUTDOOR UNIT - SETTING THE MODE DISPLAY SETTINGS MODE 2 < SCREEN 4 > < SCREEN 0 > Setting Mode 2 allows the user to change system settings. See table in back of this section. Blink interval: 0.4 sec. On - 0.4 sec. Off <...
Page 60: 7-Segment Display
SERVICING 7-SEGMENT DISPLAY SCREEN 0 (Display FAULT CODE) Setting Contents Notes Fault code (present) SCREEN 1 (Display FAULT CODES) Setting Contents Notes Fault code (latest) Latest Fault code (2nd) Fault code (3rd) Fault code (4th) Fault code (5th) Fault code (6th) SCREEN 2 (MONITOR MODE) Setting Contents...
Page 61 SERVICING 7-SEGMENT DISPLAY SCREEN 3 (SETTING MODE 1) Setting Contents Setting Installer / Serviceman Notes Cool Airflow Trim High 0: -15% 2: -5% 4: 5% 6: 15% *1,*2 1: -10% 3: 0% 5: 10% Cool Airflow Trim Int 0: -15% 3: 0% 6: 15% 9: Full (Max) 1: -10% 4: 5%...
Page 62 SERVICING 7-SEGMENT DISPLAY Setting SCREEN 4 (SETTING MODE 2) 0: 30min. 1: 60min. Maximum Defrost Interval Setting Contents Setting Installer / Serviceman 2: 90min. 3: 120min. Notes Maximum Defrost Interval 0: 30min. 1: 60min. 0:Same Level 2: 90min. 1:Outdoor Lower Vertical Rise 3: 120min.
Page 63: Troubleshooting
TROUBLESHOOTING OUTDOOR UNIT COOLING ANALYSIS CHART POSSIBLE CAUSE X IN ANALYSIS GUIDE INDICATE "POSSIBLE CAUSE" Liquid stop valve does not fully open Gas stop valve does not fully open Line set restriction Line set length is too long Blocked filter-dryer OD EEV coil failure OD EEV failure ID EEV coil failure...
Page 64 TROUBLESHOOTING OUTDOOR UNIT HEATING ANALYSIS CHART POSSIBLE CAUSE X IN ANALYSIS GUIDE INDICATE "POSSIBLE CAUSE" Liquid stop valve does not fully open Gas stop valve does not fully open Line set restriction Line set length is too long Blocked filter-dryer OD EEV coil failure OD EEV failure ID EEV coil failure...
Page 65 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message ● High electrical noise OD CTRL FAIL1 Indicates a general memory error. ● Replace control board if necessary ● Faulty control board ●...
Page 66 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message ● Discharge thermistor inoperable or ● Check discharge thermistor resistance and This error indicates the equipment improperly connected connections; Repair/replace as needed is experiencing frequent high ●...
Page 67 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message ● Check installation clearances. ● Check the opening of stop valve, should be full ● Short circuit condition open; Repair/replace if needed ●...
Page 68 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES Control Board Transmitted Climate Fault Code Thermostat Fault Probable Causes Corrective Actions LED Display Talk Message This error indicates the equipment ● Obstruction in fan rotation ● Check and clean grille of any debris is experiencing frequent outdoor ●...
Page 69 TROUBLESHOOTING RE-WRITING SHARED DATA TO OUTDOOR UNIT 8. Connect the Climate Talk (CT) connector to the outdoor USING BLUETOOTH® SHARED DATA LOADER unit. BTSDL01 9. Turn the power ON to the outdoor unit. 10. Continue the operation of the unit as desired. Check Troubleshooting codes to determine the need to flash shared data to outdoor unit.
Page 70 TROUBLESHOOTING RED LED (H1P) Bluetooth® Shared Data Loader BTSDL01 CONNECTOR (X52A) ZOOMED VIEW OF 19.2 SEER2 OD CONTROL BOARD...
Page 71 TROUBLESHOOTING NETWORK TROUBLESHOOTING 3. Perform continuity check on wires to make sure cable is OK. Replace the cable if necessary. If a network communication error code has occurred, use 4. Change both dip switches of DS1 on the outdoor unit the following steps to help troubleshoot the system.
Page 72 TROUBLESHOOTING THERMISTOR RESISTANCE VALUE Tm : Coil TI : Liquid Tb : Defrost Tl : Liquid Td : Discharge Ta : Ambient Tgi: Indoor Gas Tli: Indoor Liquid Thermistor Thermistor Thermistor Thermistor TEMP TEMP Volts Volts Volts Volts Resistance Resistance Resistance Resistance ℃...
Page 73 TROUBLESHOOTING PRESSURE TEMPERATURE R-410A Pressure vs. Temperature Chart PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F -37.7 37.8 74.3 100.2 420.0 120.7 137.6 -34.7 38.7 74.9 100.7 422.0 121.0 137.9 -32.0 39.5 75.5 101.1 424.0 121.4 138.3 -29.4 40.5...
Page 74 TROUBLESHOOTING Required Liquid Line Temperature LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT SERVICE VALVE (PSIG)
Page 75 TROUBLESHOOTING 2. Lift the cover and open it in the direction shown in the figure. 3. Remove fixing screws B affixing the sheet metal plate. 4. Carefully slide the sheet metal plate with the electrical WARNING board behind the refrigerant tubing as shown. HIGH VOLTAGE INSTALL THE ELECTRICAL BOARD Disconnect ALL power before servicing.
Page 76 TROUBLESHOOTING WARNING VOID CONTACT WITH THE CHARGED AREA •N EVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS VOLTS OR LESS 1. S HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR MINUTES 2. M AKE SURE TO TOUCH THE ARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE...
Page 77 TROUBLESHOOTING WARNING VOID CONTACT WITH THE CHARGED AREA •N EVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS VOLTS OR LESS 1. S HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR MINUTES 2. M AKE SURE TO TOUCH THE ARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE...
Page 78 TROUBLESHOOTING WARNING VOID CONTACT WITH THE CHARGED AREA •N EVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS VOLTS OR LESS 1. S HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR MINUTES 2. M AKE SURE TO TOUCH THE ARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY TO PREVENT FAILURE OF THE...
Page 79 Troubleshooting Inverter - Cooling Cooling Go into the thermostat settings Is there a call for cooling and turn cool “on” on the thermostat? Check the circuit breaker. Is there 240v between Ensure the disconnect is L1 & L2 on the plugged in.
Page 80 Troubleshooting Inverter - Heating No Heat Go into the thermostat settings Is there a call for heating and turn heating “on” on the thermostat? Check the circuit breaker. Is there 240v between Ensure the disconnect is L1 & L2 on the plugged in.
Page 81 Troubleshooting Error Code - 13 Error Code: Board reads 13 - High pressure error critical 13 on the display Applicable Models: Outdoor units Open stop valve, replace stop Stop valve valve clogged? Method of Error Detection: (Cooling) OD hex mid thermistor (Heating) ID pressure sensor Adjust sub-cooling with manifold Error Decision Conditions:...
Page 82 Troubleshooting Error Code - 14 Error Code: Board reads 14 - High pressure error minor 14 on the display Applicable Models: Outdoor AC Outdoor HP Are the stop Open stop valves valves all the way open? Method of Error Detection: (Cooling) OD hex mid thermistor (Heating) ID pressure sensor Error Decision Conditions:...
Page 83 Troubleshooting Error Code - 15 & 16 Error Code: Board reads 15 - Low pressure error 15 or 16 on the display 16 - Low pressure error (Minor) Applicable Models: Are the stop Outdoor AC Open stop valves all the way valves all the Outdoor HP way open?
Page 84 Troubleshooting Error Code - 18 & 19 Error Code: Board reads 18 - OD CTRL Fail 2 18 or 19 on the display 19 - PCB or Fan Fail Applicable Models: Is there Outdoor AC debris in the Remove debris Outdoor HP outdoor fan motor?
Page 85 Troubleshooting Error Code - 20 Error Code: Board reads 20 - EEV open circuit 20 on the display Applicable Models: Outdoor HP Is the Connect outdoor EEV outdoor EEV connected? Method of Error Detection: EEV coil is not connected Does the Error Decision Conditions: Replace the board outdoor EEV...
Page 86 Troubleshooting Error Code - 21 Error Code: Board reads 21 - EEV control error 21 on the display Applicable Models: Outdoor AC Was the Outdoor HP Recover the charge and weigh refrigerant in the appropriate amount charge weighed in properly? Method of Error Detection: Detected by discharge pipe superheat and EEV pulse.
Page 87 Troubleshooting Error Code - 22 Error Code: Board reads 22 - High discharge temperature 22 on the error display Applicable Models: Outdoor AC Discharge Outdoor HP temperature Check refrigerant leak. Check higher than compressor fault 248F (120C)? Method of Error Detection: Detected by discharge temperature Error Decision Conditions:...
Page 88 Troubleshooting Error Code 23, 25, 27, 28, 29 Error Code: Board Flashes 23 - DISCH temperature fail 23, 25, 27, 28, 29 25 - Air sensor fault 27 - Coil temperature fail 1 Test termistors, Replace the thermistor 28 - Coil temperature fail 2 is the thermistor out of range? 29 - Liquid temperatre fail...
Page 89 Troubleshooting Error Code - 24 Error Code: Board reads 24 - HPS open 24 on the display Applicable Models: Outdoor AC Outdoor HP Check the resistance of high Cycle power pressure switch, is it open? Method of Error Detection: High pressure switch is open Error Decision Conditions: High pressure switch is open Read pressure on...
Page 90 Troubleshooting Error Code - 26 Error Code: Board reads 26 - Pressure sensor 26 on the display Applicable Models: Outdoor AC Outdoor HP Test the outdoor pressure sensor, Cycle power does the pressure Method of Error Detection: sensor test ok? Detected by pressure sensor Error Decision Conditions: The control determines that the...
Page 91 Troubleshooting Error Code - 30 Error Code: Board reads 30 - OD CTRL fail 3 30 on the display Applicable Models: Outdoor AC Outdoor HP Check the outdoor unit wiring, is there Correct wiring a problem with the Method of Error Detection: outdoor unit Control board wiring?
Page 92 Troubleshooting Error Code - 31 Error Code: Board reads 31 - HI leak current 31 on the display Applicable Models: Outdoor AC Outdoor HP Is the system Ground the system grounded properly? Method of Error Detection: Detected by continuity of OL switch.
Page 93 Troubleshooting Error Code - 32 with cooling loop Error Code: Board reads 32 - Outdoor PCB high 32 on the temperature error display Applicable Models: Outdoor AC 1.5-3.0 ton Outdoor HP 1.5-30. ton Is the cooling Open stop valves fin dirty? Method of Error Detection: Detected by thermistor on inverter cooling fin...
Page 94 Troubleshooting Error Code - 32 with heat sink Error Code: Board reads 32 - Outdoor PCB high 32 on the temperature error display Applicable Models: Outdoor AC 3.5-5.0 ton Outdoor HP 3.5-5.0 ton Is the liquid Fix the cooling loop and ensure tubing contacting proper contact the cooling plate?
Page 95 Troubleshooting Error Code - 57 Error Code: Board reads 57 - Refrigerant cooling sweat 57 on the error display Applicable Models: Outdoor HP 3.5-5.0 ton Charge amount Check refrigerant leak. Charge of refrigerant is refrigerant correctly. Method of Error Detection: correct? Detected by outdoor liquid temperature...
Page 96 Troubleshooting Error Code - 70 Error Code: Board reads 70 - EEV open circuit 70 on the display Applicable Models: DV**FEC / DV**PEC / CAPE(A) / CHPE Is the indoor Is the indoor Plug the connection into the EEV connection EEV connection correct termination as shown on plugged into the...
Page 97 Troubleshooting Error Code - 73 Error Code: Board reads 73 - Liquid side thermistor 73 on the adnormality display Applicable Models: DV**FEC Indoor liquid DV**PEC thermistor not Connect the liquid thermistor CAPE(A) connected? (control CHPE board and junction connector) Method of Error Detection: Check indoor thermistor resistance value (X15A, 4 and 5 pins)
Page 98 Troubleshooting Error Code - 74 Error Code: Board reads 74 - Gas side thermistor 74 on the abnormality display Applicable Models: DV**FEC Indoor gas DV**PEC thermistor not CAPE(A) Connect the gas thermistor connected? (Control CHPE board and junction connector) Method of Error Detection: Check indoor thermistor resistance value (X15A,1 and 2 pin)
Page 99 Troubleshooting Error Code - 75 Error Code: Board reads 75 - Pressure sensor abnormality 75 on the display Applicable Models: DV**FEC DV**PEC CAPE(A) Indoor pressure CHPE sensor not Connect the pressure sensor connected? (Control board and junction connector) Method of Error Detection: Check indoor thermistor resistance value (X16A,3 and 4 pin)
Page 100 Troubleshooting Error Code - 77 Error Code: Board reads 77 - Indoor unit - Thermostat 77 on the communication error (Start-up & display during operation) Applicable Models: DV**FEC Incorrect wiring to DV**PEC communication Connect wiring to communica- CAPE(A) circuit (between ID tion circuit CHPE unit and...
Page 101 Troubleshooting Error Code B0 & B1 Error Code: Board Flashes B0 - Blower motor not running B0 & B1 B1 - Blower motor communication error Check wiring harness and wiring connections. Correct loose wiring issue. OHM motor for open or shorted circuit. Applicable Models: DV**REC DV**PEC...
Page 102 Troubleshooting Error Code - B2-B6, B9 Error Code: Board flashes B2 - Blower motor operating in B2-B6 or B9 power, temp or speed limiting conditions B3 - Circulating blower motor is operating in a power, temperature, Does the air or speed limiting condition Verify correct motor horsepower.
Page 103 Troubleshooting Error Code - B7 Error Code: Board reads B7 - ID blower motor does not B7 on the have required parameters to display function. Motor fails to start 40 consecutive times. Locked motor Applicable Models: Remove obstacles from a rotor blower / motor EEV air handler...
Page 104 Troubleshooting Error Code - B9 Error Code: Board reads B9 - Low indoor airflow (without B9 on the electric heat mode) display Applicable Models: DV**FEC DV**PEC Obstacles are Remove obstacles from a touching the blower / motor or filters blower/motor, or Method of Error Detection: blocked filters? Number of revolutions of the...
Page 105 Troubleshooting Error Code - D0, D1, D4 Error Code: D0 - Data not yet on network (No Does the board Check to see if the fuse is good, net data) flash D0, D1, or if not replace D1 - Invalid data on network (Invalid data) D4 - Invalid bluetooth shared data loader BTSDL01 data (Invalid MC...
Page 106 Troubleshooting Error Code - d2 Error Code: Board Flashes d2 - System mismatch Applicable Models: Outdoor AC Outdoor HP Is the outdoor unit and indoor unit Replace to certified combination combination in AHRI website? Methof of Error Detection: Communication data from indoor Make sure the airflow trim unit settings have not been set to...
Page 107 Troubleshooting Error Code - EC Error Code: Board Flashes EC - Heater too large / Heater too small / No heater match Verify the installed Applicable Models: electric heater is valid for Indoor units the air handler blower. Check name plate or specification sheet Methof of Error Detection: applicable to your model...
Page 108: Wiring Diagrams
*SXV90[24-36]10**...
Page 109 *SXV904810**...
Page 110 WIRING DIAGRAM *SXV906010** Wiring is subject to change. Always refer to wiring diagram on the unit for the most up to date wiring.
Page 111 WIRING DIAGRAM HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH INDOOR UNIT FOR TXV APPLICABLE UNIT (MBVC**00AA-A) 763962519 9!213 60 92...
Page 112 WIRING DIAGRAM INDOOR UNIT FOR EEV APPLICABLE UNIT (AMVE**) RAM MONITOR FLASH WRITER SHARE DATA Wiring is subject to change. Always refer to wiring diagram on the unit for the most up to date wiring.
Page 113: Accessories
ACCESSORIES EXPANSION VALVES *SXV90**10** Model Name TXV-Kit *SXV902410** TXV-V24 *SXV903610** TXV-V36 *SXV904810** TXV-V48 *SXV906010** TXV-V60 R410A - Max. 75°C (167°F) SS = 2°C (3.6°F) or according cation Number of turns Number of turns Number of turns Number of turns from SS to from SS to from SS to from SS to...
Page 114 ACCESSORIES AMVE HEATER KIT MODELS AMVE24BP14** AMVE36CP14** AMVE48DP14** AMVE60DP14** *Revision level that may or may not be designated. NOTE: Airflow selection should meet the minimum requirements as mentioned in the air handler Installation instructions. For heater kit installation, it is important to set the capacity of the electric heater at Set-up menu on the thermostat and DIP switch on indoor unit control board.

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Maytag Amana SXV9 Series Service And Troubleshooting

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