Amana AVZC20 Series Service Instructions Manual
  1. Manuals
  2. Brands
  3. Amana Manuals
  4. Heat Pump
  5. AVZC20
  6. Service instructions manual

Amana AVZC20 Series Service Instructions Manual

Inverter heat pump condenser units with r-410a refrigerant blowers, coils, & accessories
Hide thumbs Also See for AVZC20 Series:
Table of Contents

Advertisement

Quick Links

Service Instructions
® Brand AVZC20 Inverter
Heat Pump Condenser Units
with R-410A Refrigerant
Blowers, Coils, & Accessories
This manual is to be used by qualified, professionally trained HVAC technicians only.
RS6215002r7
The manufacturer does not assume any responsibility for property damage or personal injury
October 2016
due to improper service procedures or services performed by an unqualified person.
© 2015-2016 Goodman Manufacturing Company, L.P.
®
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.

Advertisement

Table of Contents
loading

Related Manuals for Amana AVZC20 Series

Summary of Contents for Amana AVZC20 Series

  • Page 1 Service Instructions ® Brand AVZC20 Inverter Heat Pump Condenser Units with R-410A Refrigerant Blowers, Coils, & Accessories This manual is to be used by qualified, professionally trained HVAC technicians only. RS6215002r7 The manufacturer does not assume any responsibility for property damage or personal injury October 2016 due to improper service procedures or services performed by an unqualified person.
  • Page 2 AND SERVICERS product. For further assistance, please contact: RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS CONSUMER INFORMATION LINE - ® AMANA BRAND PRODUCTS WARNING TOLL FREE 1-877-254-4729 (U.S. only) HIGH VOLTAGE ! email us at: customerservice@goodmanmfg.com...
  • Page 3 IMPORTANT INFORMATION WARNING WARNING (”EPA”) YSTEM CONTAMINANTS IMPROPER SERVICE PROCEDURE AND NITED TATES NVIRONMENTAL ROTECTION GENCY PHYSICAL ABUSE AFFECTING HERMETIC COMPRESSOR ELECTRICAL HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION TERMINALS MAY CAUSE DANGEROUS SYSTEM VENTING AND DISPOSAL OF REFRIGERANTS INTRODUCED INTO THIS UNIT AILURE TO FOLLOW THESE REGULATIONS MAY HARM THE Notice: ENVIRONMENT AND CAN LEAD TO THE IMPOSITION OF SUBSTANTIAL...
  • Page 4 PRODUCT IDENTIFICATION NOMENCLATURES Brand Engineering A - Amana® Brand Minor Revision Compressor Engineering V - Variable Capacity Major Revision Voltage Type 1 - 208/230 V single phase 60 Hz X - AC R-410A 2 -208/240 V single phase 50 Hz...
  • Page 5 ACCESSORIES EXPANSION VALVES R410A - Max. 75°C (167°F) SS = 2°C (3.6°F) or according to customer specifi 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 TIGHT Spring LOOSE Spring tight spring...
  • Page 6 AVZC20***1** Model Name TXV-Kit AVZC200241** TXV-V24 AVZC200361** TXV-V36 AVZC200481** TXV-V48 AVZC200601** TXV-V60 AVPVC**14 ELECTRIC HEAT AIRFLOW TABLE Htr kW AVPVC24C14** AVPVC36D14+ AVPVC48D14*++ AVPVC60D14++ 850** 1250 1250 1250 1300 1300 1300 1500 1500 1500 OFF OFF 1025 1550 1550 1550 1720 1720 1780 OFF OFF...
  • Page 7 CAPACITOR 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 8 CAPACITOR 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 9 CAPACITOR 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 10 REPLACING THE BOARD (2, 3, and 4 TON ONLY) Install the electrical board WARNING When working on a service port, ensure that no refrigerant and/or HIGH VOLTAGE ! compressor oil is sprayed onto the electrical board. This could damage the board’s functionality. ISCONNECT POWER BEFORE SERVICING OR INSTALLING...
  • Page 11 SYSTEM OPERATION This section gives a basic description of heat pump condenser COOLING unit operation, its various components and their basic opera- The refrigerant used in the system is R-410A. It is a clear, color- tion. Ensure your system is properly sized for heat gain and loss less, non-toxic and non-irritating liquid.
  • Page 12 SYSTEM OPERATION BOOST MODE BOOST MODE enables the system to operate at a higher com- pressor speed than rated maximum compressor speed and satisfy the structural load more effectively during higher am- bient outdoor conditions. BOOST MODE is initiated by an out- door temperature sensor located in the outdoor unit.
  • Page 13 SYSTEM OPERATION 3. Enter Installer password, if known. The password is the thermostat date code and can be obtained by selecting the red Cancel but- ton and selecting the Dealer Information but- ton. Once recorded, click the green OK button and return to previous step.
  • Page 14 SYSTEM OPERATION 7. BOOST MD turns BOOST MODE OFF or ON. BOOST MODE is ON by default..Heat Pump > SYS SETUP > BOOST MD 8. BOOST TEMP adjusts the activation temperature from 70°F to 105°F. “Always ON” option is also available to permanently engage BOOST MODE.
  • Page 15 SYSTEM OPERATION Once satisfied with BOOST MODE adjustments, navigate to the HOME screen by selecting the Previous Menu button three times then selecting HOME. DEHUMIDIFICATION 6. Scroll down and select Dehumidification. The thermostat reads the indoor humidity level from the CTK04 and allows the user to set a dehumidification target based on 7.
  • Page 16 SYSTEM OPERATION HEATING up heat and vaporizes as it proceeds through the coil, cooling the indoor coil down to about 48°F. The heating portion of the refrigeration cycle is similar to the Heat is continually being transferred to the cool fins and tubes of cooling cycle.
  • Page 17 SYSTEM OPERATION COOLING CYCLE Piping Diagram with TXV applicable indoor unit (2 - 4 Ton) HP/LP Reversing Valve HP/LP sensor Ball Valve (Gas) Ta Thermistor Check valve separator Td Thermistor Motor Motor Thermistor Filter Accumulator Compressor Capillary tube Stop Check Valve valve Filter...
  • Page 18 TROUBLESHOOTING 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 Check valve failure –...
  • Page 19 TROUBLESHOOTING 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 Check valve failure –...

  • Page 20: Table Of Contents

    SERVICING TABLE OF CONTENTS TABLE OF CONTENTS CHECKING VOLTAGE ............. 21 S-40A AVPVC HEATER CONTROL ..........45 CHECKING WIRING ............21 S-50 CHECKING HEATER LIMIT CONTROL(S) ......46 CHECKING THERMOSTAT AND WIRING ......21 S-52 CHECKING HEATER ELEMENTS ........46 S-3A THERMOSTAT AND WIRING .........

  • Page 21: Checking Voltage

    SERVICING S-1 CHECKING VOLTAGE S-3 CHECKING THERMOSTAT AND WIRING ComfortNet™ Ready Models 1. Remove outer case, control panel cover, etc., from unit being tested. Communicating Thermostat Wiring: The maximum wire length for 18 AWG thermostat wire is 250 feet. With power ON: S-3A THERMOSTAT AND WIRING WARNING OLTAGE NOW PRESENT...

  • Page 22: S-3E Ctk04** Comfortnet

    SERVICING S-3E CTK04** COMFORTNET THERMOSTAT CTK04 W IRING NOTE: A removable plug connector is provided with the control VERVIEW to make thermostat wire connections. This plug may be removed, The ComfortNet™ system (or CT system) is a system that includes wire connections made to the plug, and replaced.

  • Page 23: Thermostat Menu Screen

    SERVICING HERMOSTAT CREEN YSTEM TART NOTICE N INITIAL POWER START THE OUTDOOR UNIT WILL DISPLAY CODE E11, SYSTEM SIGNALING THAT INITIAL TEST MUST BE RUN OLLOW ™ OMFORT SETUP SCREEN TO ENTER APPLICATION UNIQUE INFORMATION OMFORT ET THERMOSTAT MANUAL FOR DETAILED INFORMATION A system test is now required to check the equipment settings and functionality.
  • Page 24 SERVICING 4. From the MENU screen, scroll down and select COMFORTNET™ USER MENU. 5. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom.) 6.
  • Page 25 SERVICING 8. Next, scroll down and select EQUIP TEST. 9. Select SYSTEM TEST. 10. Select ON to run the SYSTEM TEST. Press DONE to initiate test. 11. Allow the system test to run for its duration (5-15 minutes). EQUIP TEST SCREEN will show the system test is ON once selected.

  • Page 26: Set Thermostat To Charge Mode26

    SERVICING 12. Press Previous Menu button and navigate to HOME screen and allow test to finish. The display similar to the one at the right will be displayed after SYSTEM TEST completes. Test is complete only when CODE 11 notice clears from BOTH the thermostat display AND the seven segment LED display on the outdoor unit.
  • Page 27 SERVICING 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue. 5. Select HEAT PUMP. 6. Select MAINTENANCE.
  • Page 28 SERVICING 7. Select CHARGE MODE. 8. Select ON. Press DONE to initiate CHARGE MODE. (System will then run for 1 hour and either return to cooling or heating mode depending on if the mode thermostat is set at COOL or HEAT MODE from the SYSTEM menu on the main screen.

  • Page 29: Set Thermostat To Adjust

    SERVICING HERMOSTAT TO DJUST AXIMUM OMPRES PEED Please follow the following sequence to enter MAXIMUM compressor speed. Maximum compressor speed at which the outdoor unit will operate in cooling or heating mode can be changed using ther- mostat. Maximum compressor speed can be changed to get the required capacity or efficiency.
  • Page 30 SERVICING 4. Select YES to continue. 5. Select HEAT PUMP. 6. Select CL RUN VALUES: for cooling mode HT RUN VALUES: for heating mode 7. Select COOL/HEAT RPS RANGE. Press COOL RPS RANGE (for cooling mode) or HEAT RPS RANGE (heating mode) to select the range in which the desired Maximum compressor speed falls.

  • Page 31: Indoor Air Cfm Trim

    SERVICING 8. Select COOL RPS SELECT (COOLING mode) or HEAT RPS SELECT (heating mode). Select the desired Maximum compressor speed 9. Once Maximum compressor speed is set, navigate to HOME screen. Enter normal operation with temperature offset or thermostat schedule, as desired. HERMOSTAT TO DJUST NDOOR...
  • Page 32 SERVICING 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue. 5. Select HEAT PUMP. 6. Select COOL SETUP: COOLING MODE HEAT SETUP: HEATING MODE...
  • Page 33 SERVICING 7. User can change the airflow trim at high, intermediate and low compressor for cooling and heating mode. Select: Cool Airflow Trim Hi: high speed cooling Cool Airflow Trim Int: intermediate speed cooling Cool Airflow Trim Low: low speed cooling Heat Airflow Trim Hi: high speed heating Heat Airflow Trim Int: intermediate speed heating Heat Airflow Trim Low: low speed heating...

  • Page 34: Set Thermostat To Adjust

    SERVICING INDOOR AIRFLOW HERMOSTAT TO DJUST PROFILE, COOL/HEAT ON DELAY COOL/HEAT OFF DELAY DEFROST 1. Please follow the sequence 1. to .6 of S HERMOSTAT DJUST NDOOR TRIM 2. Select Cool Set-up for Cool Airflow Profile, Cool ON Delay or Cool OFF Delay Heat Set-up for Heat ON Delay or Heat OFF Delay Heat Airflow Profile, DEFROST Once Cool Set-up / Heat Set-up settings are complete,...

  • Page 35: Set Thermostat To Force Defrost Cycle

    SERVICING FORCE DEFROST CYCLE HERMOSTAT TO Follow the following sequence to Force a defrost cycle. NOTE: Unit will need to wait another 6 minutes before starting another force defrost cycle. 1. On the HOME screen, select MENU. 2. From the MENU screen, select COMFORTNET™ USER MENU. 3.
  • Page 36 SERVICING 5. Select HEAT PUMP. 6. Select EQUIP TEST. 7. Select FORCE DF CYCLE. 8. Select ON. Press DONE to initiate FORCE DEFROST CYCLE.

  • Page 37: Set Thermostat To Pump Down

    SERVICING PUMP DOWN HERMOSTAT TO Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. Do not operate Cool ON or Heat ON mode to enter PUMP DOWN. Before starting the PUMP DOWN operation, change indoor fan trim, delay and profile back to default and stop electric heater and gas furnace.
  • Page 38 SERVICING 4. Select YES to continue. 5. Select HEAT PUMP . 6. Select MAINTENANCE. 7. Select PUMP DOWN.
  • Page 39 SERVICING 8. Select ON. Press DONE to initiate PUMP DOWN. Approximately one minute later, the compressor should start operating. Check the amperage at the compressor wiring to see the compressor operation status. Close liquid service valve approximately two minutes after compressor has come on.

  • Page 40: Set 7-Segment Mode Display To Pump Down

    SERVICING PUMP DOWN EGMENT ISPLAY TO Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. Do not operate COOL ON or HEAT ON mode to enter PUMP DOWN. Before starting the PUMP DOWN operation, change indoor fan trim, delay and profile back to default and stop electric heater and gas furnace.
  • Page 41 SERVICING 3. Follow screen for System Status. Time Stamp (Compressor run time) HEAT PUMP Current system operational Mode (cooling, cooling startup, heating, heating startup, oil return, defrost, stop) Compressor Reduction Mode Requested and Actual percentage Demand (Requested Demand, Actual cooling / heating provided) Requested and Reported ID airflow (Requested CFM, Actual CFM) Outdoor Air Temperature, Outdoor Fan speed...

  • Page 42: Checking Transformer And Control Circuit

    SERVICING CHECKING TRANSFORMER AND CONTROL CIRCUIT With power ON: WARNING WARNING HIGH VOLTAGE ! OLTAGE NOW PRESENT ISCONNECT POWER BEFORE SERVICING OR INSTALLING ULTIPLE POWER SOURCES MAY BE 3. Start the system in charge mode and place a piece of card- board in front of the outdoor coil, raising the condensing PRESENT AILURE TO DO SO MAY CAUSE PROPERTY...

  • Page 43: S-15A Resistance Check (5 Ton Only)

    SERVICING S-15A RESISTANCE CHECK (5 TON ONLY) WARNING VOLTMETER HIGH VOLTAGE ! ISCONNECT POWER BEFORE SERVICING OR INSTALLING ULTIPLE POWER SOURCES MAY BE 15 AMP FUSE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH AMMETER 1.

  • Page 44: S-17B Ground Test

    SERVICING check the resistance between each of the three leads separately to ground (such as an unpainted tube on the compressor). HIGH VOLTAGE! 3. If a ground is indicated, then carefully remove the compressor Disconnect ALL power before servicing terminal protective cover and inspect for loose leads or or installing.

  • Page 45: And Eev Coil Resistance

    SERVICING S-26 TESTING TEMPERATURE SENSORS AND EEV COIL Features RESISTANCE The new air handler control includes advanced diagnostic fea- tures with fault recall, estimated CFM display via on-board LED, The AVZC ComfortNet ready heat pump models are factory and ComfortNet ready.

  • Page 46: Checking Heater Limit Control(S)

    SERVICING 4. If voltages are different than stated in the table below, check WARNING thermostat wiring for opens/shorts. Confirm that the BIAS and TERM dipswitches are in the ON position. Line Voltage now present. 5. The network troubleshooting chart on the next page provides additional communications troubleshooting information.

  • Page 47: Electric Heater (Optional Item)

    SERVICING S-60 ELECTRIC HEATER (OPTIONAL ITEM) HEAT KIT NOMINAL kW Optional electric heaters may be added, in the quantities shown 19/20 in the specifications section, to provide electric resistance heat- ing. Under no condition shall more heaters than the quantity 1000 shown be installed.

  • Page 48: S-61A Checking Heater Limit Control(S)

    SERVICING S-61A CHECKING HEATER LIMIT CONTROL(S) 1. Never open a system that is under vacuum. Air and moisture will be drawn in. Each individual heater element is protected with a limit control device connected in series with each element to prevent overheat- 2.

  • Page 49: Evacuation

    SERVICING S-102 EVACUATION WARNING LOW SIDE HIGH SIDE GAUGE GAUGE REFRIGERANT UNDER PRESSURE! AND VALVE AND VALVE Failure to follow proper procedures may cause property damage, personal injury or death. 800 PSI RATED HOSES IMPORTANT NOTE: Because of the potential damage to compres- sors, do not allow suction pressure at service valve to drop below 5 CHARGING PSIG when pumping unit system down for repair.

  • Page 50: Charging

    SERVICING S-103 CHARGING In the event of system overcharge or undercharge, refrigerant in the system must be adjusted to the appropriate subcooling WARNING and superheat as specified in the following sections. Refrig- erant amount should be adjusted within +/- 0.5 lb. if the out- REFRIGERANT UNDER PRESSURE! door ambient temperature is greater than 65°F and less than * Do not overcharge system with refrigerant.

  • Page 51: Overfeeding

    SERVICING 0% bleed type expansion valves are used on indoor and outdoor CAUTION coils. The 0% bleed valve will not allow the system pressures To prevent personal injury, carefully connect and (High and Low side) to equalize during the shut down period. The disconnect manifold gauge hoses.

  • Page 52: Checking Thermostatic

    SERVICING 5. Compare the hi-pressure reading to the "Required Liquid Line makes adequate contact and is insulated for best possible Temperature" chart. Find the hi-pressure value on the left col- readings. Use liquid line temperature to determine sub- umn. Follow that line right to the column under the design cooling and vapor temperature to determine superheat.

  • Page 53: Non-Condensables

    SERVICING stricted, the power element is faulty, or the equalizer tube is CAUTION plugged. Do not allow the sludge or oil to contact the skin. 5. Capture the charge, replace the valve and drier, evacuate and Severe burns may result. recharge.
  • Page 54 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 55 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 56 SERVICING Inverted suction loop is not required at either unit. An accumulator is not required for outdoor unit (accumulators are factory installed ). Long Radius Street Ell 45° 45° Street Ell Short Radius Street Ell Figure 3-1. Oil Trap SECTION 4. OUTDOOR UNIT IS BELOW THE INDOOR UNIT Heat Pump BELOW Indoor Coil Maximum line set equivalent length of...

  • Page 57: Duct Static Pressures And/Or

    SERVICING The following table shows refrigerant amount for every 5 feet of S-203 AIR HANDLER EXTERNAL STATIC line. To determine proper air movement, proceed as follows: Unit Tonnage 1. Using a draft gauge (inclined manometer), measure the static 2-Ton 3-Ton 4-Ton 5-Ton pressure of the return duct at the inlet of the unit, (Negative...

  • Page 58: Coil Static Pressure Drop

    SERVICING S-204 COIL STATIC PRESSURE DROP 1. Using a draft gauge (inclined manometer), connect the posi- tive probe underneath the coil and the negative probe above the coil. 2. A direct reading can be taken of the static pressure drop across the coil.
  • Page 59 SERVICING INDOOR UNIT TROUBLESHOOTING FOR TVX APPLICABLE UNIT 24VAC Auxiliary Alarms FUSE Seven Segment Green CFM LED Dip Switches Communicating Board and the error message is removed. The error will be main- UXILIARY LARM WITCH tained in the equipment’s fault history. See FIGURE 15 on the The control is equipped with two Auxiliary Alarm terminals, following page for the connection location.
  • Page 60 SERVICING Airflow Table NOTE: Upon start up in communicating mode the circuit board may display an “Ec” Airflow error. This is an indication that the dip switches on the control board need to be Model Level configured in accordance with the Electric Heating Airflow Table. Configuring the High dip switches and resetting power to the unit will clear the error code.
  • Page 61 SERVICING DIAGNOSTIC CODES 7 SEGMENT LED (characters will DESCRIPTION OF CONDITION alternate) (no display) Internal Control Fault / No Power Standby, Waiting for Inputs Heater Kit Dip Switches Not Set Properly No Heater Kit Installed - System Calling for Auxiliary Heat Fuse Open Auxiliary Switch Open Data Not On Network...
  • Page 62 SERVICING INDOOR UNIT ERROR CODES...
  • Page 63 SERVICING INDOOR UNIT ERROR CODES...
  • Page 64 SERVICING INDOOR UNIT ERROR CODES...
  • Page 65 SERVICING INDOOR UNIT ERROR CODES...
  • Page 66 SERVICING DVANCED EATURE DIAGNOSTICS INDICATION/USER SUBMENU ITEM COMMENTS MODIFIABLE OPTIONS Clear Faults NO or YES Selecting "YES" clears the fault history. Fault 1 Most recent HP fault Fault 2 2nd most recent HP fault Fault 3 3rd most recent HP fault Fault 4 4th most recent HP fault Fault 5...
  • Page 67 SERVICING DVANCED EATURE SYSTEM SETUP (SYS SETUP) SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS Reset System Setup Options to Factory NO or YES Selecting "YES" resets this menu to factory default settings. Defaults SET MAX CURRENT Future use. If the outdoor & indoor units are within +/- 15 ft. vertical distance, Same Level, Outdoor Lower, or select SAME LEVEL.
  • Page 68 SERVICING DVANCED EATURE COOL SETUP SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS CL Reset YES or NO Selecting to default factory setting. Cool Airflow Trim Hi -15% to +15% in 3% increments Selects the cooling airflow trim amount. Cool Airflow Trim Int -15% to +15% in 3% increments Selects the cooling airflow trim amount.
  • Page 69 SERVICING 1. HEATING EMERGENCY MODE EMERGENCY MODE FOR EEV APPLICABLE INDOOR UNIT Emergency Heating mode is to be used when communica- tion between the indoor unit and thermostat are not func- 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 70 SERVICING 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 71 SERVICING 2. COOLING EMERGENCY MODE Dip Switch Position Cooling emergency mode is to be used when communica- Function tion between the indoor and outdoor units is not func- DS2-1 DS2-2 tioning properly and temporary cooling operation is re- quired. This mode enables the outdoor unit and indoor Normal Operation unit to run independently of each other.
  • Page 72 SERVICING Dipswitch Default Factory Settings Switch # Setting Function No Use No Use ID DS-1 No Use No Use No Use No Use ID DS-2 No Use No Use Heater Kit Selection in Emergency Mode Heater Kit Selection in Emergency Mode ID DS-3 Heater Kit Selection in Emergency Mode Heater Kit Selection in Emergency Mode...
  • Page 73 SERVICING COOLING EMERGENCY MODE WIRING FOR TXV APPLICABLE INDOOR UNIT Cooling emergency mode is available when using a TXV applicable indoor unit. To energize the blower at the appropriate 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 74 SETTING THE MODE DISPLAY MODE DISPLAY INTRODUCTION A 3-digit display is provided on the printed circuit board (PCB) 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. DISPLAY The display consists of 3 digits.
  • Page 75 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 76 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 77 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: < SCREEN 1 > 0.4 sec.
  • Page 78 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: < SCREEN 2 > 0.4 sec.
  • Page 79 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 80 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 81 7-SEGMENT DISPLAY SCREEN 3 (SETTING MODE 1) Setting Contents Setting Installer / Serviceman Notes 0:-15% 8:9% 5:0% 1:-12% 9:12% 6:3% 2:-9% 7:6% 10:15% Cool Airflow Trim High 3:-6% 4:-3% 0:-15% 8:9% 5:0% 1:-12% 6:3% 9:12% 2:-9% 10:15% 7:6% Cool Airflow Trim Int 3:-6% 4:-3% 0:-15%...
  • Page 82 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ClimateTalk PCB LED Transmitted ClimateTalk Thermostat Fault Probable Causes Corrective Actions Fault Code Display Message ● High electrical noise Indicates a general memory error. ● Replace control board if necessary OD CTRL FAIL1 ● Faulty control board ●...
  • Page 83 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ClimateTalk PCB LED Transmitted ClimateTalk Thermostat Fault Probable Causes Corrective Actions Fault Code Display Message ● Discharge thermistor inoperable or This error indicates the equipment is improperly connected ● Check discharge thermistor resistance and experiencing frequent high discharge ●...
  • Page 84 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ClimateTalk PCB LED Transmitted ClimateTalk Thermostat Fault Probable Causes Corrective Actions Fault Code Display Message ● Check installation clearances. ● Short circuit condition ● Check the opening of stop valve, should be full open; ● Stop valve not completely open Repair/replace if needed Board detected a high current condition.
  • Page 85 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ClimateTalk PCB LED Transmitted ClimateTalk Thermostat Fault Probable Causes Corrective Actions Fault Code Display Message This error indicates the equipment is ● Check and clean grille of any debris experiencing frequent outdoor control ● Obstruction in fan rotation ●...
  • Page 86 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES 8. Connect the Climate Talk (CT) connector to the outdoor unit. RITING HARED ATA TO UTDOOR SING 9. Turn the power ON to the outdoor unit. EMORY 10. Continue the operation of the unit as desired. Check Troubleshooting codes to determine the need to flash shared data to outdoor unit.
  • Page 87 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES Red LED (H1P) Memory Chip Connector (X52A) Zoomed view of 20 SEER OD Control Board...
  • Page 88 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ETWORK ROUBLESHOOTING The ComfortNet™ system is a fully communicating system, consti- Communications is achieved by taking the difference between a tuting a network. Occasionally the need to troubleshoot the net- positive dc signal and a negative dc signal. The positive dc signal work may arise.
  • Page 89 THERMISTOR RESISTANCE AND TEMPERATURE CHARACTERISTICS Tm : Coil TI : Liquid Tl : Liquid Td : Discharge Ta : Ambient Tb : Defrost Thermistor Thermistor Thermistor Thermistor TEMP TEMP Volts Volts Volts Volts Resistance Resistance Resistance Resistance ℃ R（kΩ） DC（V) R（kΩ）...
  • Page 90 PRESSURE vs TEMPERATURE CHART 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...
  • Page 91 LIQUID LINE TEMPERATURE CHART Required Liquid Line Temperature LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT SERVICE VALVE (PSIG)
  • Page 92 WIRING DIAGRAM - 2 T AVZC200241** Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 93 WIRING DIAGRAM - 3 - 4 T AVZC200361**; AVZC200481** Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 94 WIRING DIAGRAM - 5 T AVZC200601** Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
  • Page 95 WIRING DIAGRAM 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. DISCONNECT W2 W1 INDOOR CIRCU LATOR LEARN 24 V 3 A FUSE BLWR NOTE 7...

This manual is also suitable for:

Avpvc24c14 seriesAvpvc36d14 seriesAvpvc48d14 seriesAvpvc60d14 seriesAvzc200241 seriesAvzc200361 series ... Show all

Table of Contents