Amana AVZC18 Series Service Instructions Manual
Inverter heat pump condenser units with r-410a refrigerant blowers, coils, and accessories
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- Installation & service reference (48 pages) ,
- Manual (86 pages)
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AVZC18 Inverter Heat Pump Condenser Units
R-410A Refrigerant Blowers
with
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL
(
, "
OR REPAIR
HEREINAFTER
SERVICE
MANUAL SHOULD SERVICE THE EQUIPMENT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES
YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE
. I
WHICH MAY RESULT
N ADDITION
MORE LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL
ONLY LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT
,
,
INSTALLATION
ADJUSTMENT
SERVICING OR REPAIR OF THE EQUIPMENT
,
SPECIFIED IN THIS MANUAL
OR ATTEMPTING TO INSTALL
OR REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER
TRAINING MAY RESULT IN PRODUCT DAMAGE
.
PERSONAL INJURY OR DEATH
This manual is to be used by qualified, professionally trained HVAC technicians only. The manufacturer does not assume any
responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.
Service Instructions
for
,
ADJUST
")
THE EQUIPMENT SPECIFIED IN THIS
. T
HE MANUFACTURER WILL NOT
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F YOU SERVICE THIS UNIT
,
IN JURISDICTIONS THAT REQUIRE ONE OR
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,
ADJUST
,
PROPERTY DAMAGE
is a registered trademark of Maytag Corporation or its related companies and is
used under license to Goodman Company, L.P., Houston, TX, USA. All rights reserved.
©
2016-2017,
2019 Goodman Manufacturing Company, L.P.
®
Brand
Coils
,
FOR CALIFORNIA CONSUMERS
,
SERVICE
,
,
MPROPER
,
SERVICE
,
Accessories
and
,
PROP 65 WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
-
0140M00517-A
RS6215001r4
April 2019
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Chapters
Table of Contents
Troubleshooting
Related Manuals for Amana AVZC18 Series
Summary of Contents for Amana AVZC18 Series
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Page 1: Service Instructions
Service Instructions ® Brand AVZC18 Inverter Heat Pump Condenser Units R-410A Refrigerant Blowers Coils Accessories with PROP 65 WARNING FOR CALIFORNIA CONSUMERS NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL ADJUST SERVICE , “ ”) OR REPAIR HEREINAFTER SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT HE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM... -
Page 2: Table Of Contents
PUSH OUT CONSUMER INFORMATION LINE - OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE O AVOID AMANA® BRAND PRODUCTS TOLL FREE POSSIBLE DIFFICULTY IN BREATHING OR DEATH 1-877-254-4729 (U.S. only) • N EVER PURGE REFRIGERANT INTO AN ENCLOSED ROOM OR SPACE 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: When the outdoor unit is connected to main power, the ENVIRONMENT AND CAN LEAD TO THE IMPOSITION OF SUBSTANTIAL...
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Page 4: Product Identification
PRODUCT IDENTIFICATION NOMENCLATURES Nomenclature 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
ACCESSORIES ACCESSORIES AVPEC For heater kit installation, it is important to set the capacity of the electric heater at Set-up menu on thermostat and DIP switch on indoor unit control board. For more information, please see indoor unit I/O manual. VALID SWITCH SETTINGS Heater kW Dip Switch Setting Indoor PCB DS Bank 3... -
Page 6: Capacitor
CAPACITOR 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... - 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...
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Page 8: Replacing The Board
REPLACING THE BOARD 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 ISCONNECT POWER BEFORE SERVICING OR damage the board’s functionality. INSTALLING ULTIPLE POWER SOURCES MAY BE 1. -
Page 9: System Operation
SYSTEM OPERATION This section gives a basic description of heat pump condenser As the cool, low pressure, saturated refrigerant enters the tubes unit operation, its various components and their basic opera- of the indoor coil, a portion of the liquid immediately vaporizes. tion. - Page 10 BOOST MODE ing more humidity from the structure than if only in cooling mode. The CTK04 also allows for an additional overcooling limit setting BOOST MODE enables the system to operate at a higher from 0 °F to 3 °F setup through the Installer Option menu (direc- compressor speed than rated maximum compressor speed and tion below).
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Page 11: Cooling Cycle
SYSTEM OPERATION COOLING CYCLE Stop HP/LP HP/LP Valve (Gas) Reversing Valve ID HP/LP OD HP/LP Sensor Sensor Check Valve Thermistor Thermistor Access Tube Thermistor Thermistor Motor Motor Thermistor Comp Thermistor SubACC Thermistor Check Valve Thermistor Filter Stop Valve Filter Filter Filter Dryer (Liquid) Filter... -
Page 12: Troubleshooting
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 ID EEV coil failure ID EEV failure... -
Page 13: Cooling Analysis
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 ID EEV coil failure ID EEV failure... -
Page 14: Servicing Table Of Contents
TABLE OF CONTENTS CHECKING VOLTAGE ............15 S-26 TESTING TEMPERATURE SENSORS CHECKING WIRING ............. 15 AND EEV COIL RESISTANCE ..........38 CHECKING THERMOSTAT AND WIRING ......15 S-40A AVPEC HEATER CONTROL ............ 39 S-3A THERMOSTAT AND WIRING ..........15 S-50 CHECKING HEATER LIMIT CONTROL(S) S-3E CTK04** COMFORTNET™... -
Page 15: Checking Voltage
SERVICING S-1 CHECKING VOLTAGE S-3A THERMOSTAT AND WIRING 1. Remove outer case, control panel cover, etc., from unit being WARNING tested. OLTAGE NOW PRESENT With power ON: With power ON, thermostat calling for cooling/heating. WARNING 1. Use a voltmeter to check for 24 volt at thermostat wires C and OLTAGE NOW PRESENT R in the indoor unit control panel. - Page 16 SERVICING However, the thermostat may also request and receive informa- UTDOOR NDOOR IRING tion from both the indoor and outdoor units. This information Low voltage wiring consists of two wires between the indoor unit may be displayed on the CT thermostat. The indoor and outdoor and outdoor unit and four wires between the indoor unit and the units also interact with one another.
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Page 17: Thermostat Menu Screens
SERVICING THERMOSTAT MENU SCREEN 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 18 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 19 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.
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Page 20: Set Thermostat To Charge Mode
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 21 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 22 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.
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Page 23: Set Thermostat To Adjust Maximum Compressor Speed
SERVICING HERMOSTAT TO DJUST AXIMUM OMPRESSOR PEED Please follow the following sequence to enter MAXIMUM compressor speed. Maximum compressor speed at which the outdoor unit will oper- ate in cooling or heating mode can be changed using thermostat. Maximum compressor speed can be changed to get the required capacity or efficiency. - Page 24 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.
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Page 25: Set Thermostat To Adjust 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 26 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 27 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...
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Page 28: Set Thermostat To Adjust Indoor Airflow Profile, Cool/Heat On Delay And Cool/Heat Off Delay Defrost
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 29: 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 30 SERVICING 5. Select HEAT PUMP. 6. Select EQUIP TEST. 7. Select FORCE DF CYCLE. 8. Select ON. Press DONE to initiate FORCE DEFROST CYCLE.
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Page 31: Set Thermostat To Pump Down
SERVICING PUMP DOWN HERMOSTAT TO PUMP DOWN operation is designed for line set less than 80 feet in length. Do not start PUMP DOWN operation if line set length is 80 feet or more. Piping may burst as a result. Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. - Page 32 SERVICING 4. Select YES to continue. 5. Select HEAT PUMP . 6. Select MAINTENANCE. 7. Select PUMP DOWN.
- Page 33 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.
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Page 34: 7-Segment Ode Isplay To Pump Down
SERVICING PUMP DOWN EGMENT ISPLAY TO 3. Close liquid service valve approximately two minutes after compressor has come on. 4. Compressor will come to a stop automatically. Close the gas service valve immediately after the compressor stops. PUMP DOWN operation is designed for line set less than 80 feet in length. -
Page 35: Set Thermostat To Check System Status
SERVICING SYSTEM STATUS HERMOSTAT TO HECK 1. Follow the sequence 1. to 5. of S HERMOSTAT TO DJUST NDOOR TRIM 2. Select STATUS. 3. Follow screen for System Status. Time Stamp (Compressor run time) Current system operational Mode (cooling, cooling startup, heating, heating startup, oil return, defrost, stop) Compressor Reduction Mode Requested and Actual percentage Demand... -
Page 36: Checking Transformer And Control Circuit
SERVICING S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT 1. Using an ohmmeter, check across terminals of high pressure control, with wire removed. If not continuous, the contacts are open. WARNING HIGH VOLTAGE ! 2. Attach a gauge to the dill valve port on the base valve. ISCONNECT POWER BEFORE SERVICING OR With power ON:... -
Page 37: Checking Compressor
SERVICING S-17 CHECKING COMPRESSOR 2. Check the wiring connection of UVW on compressor terminal. WARNING 3. Check the insulation resistance of compressor between the Hermetic compressor electrical terminal venting can compressor terminal and unpainted refrigerant piping. be dangerous. When insulating material which supports a hermetic compressor or electrical terminal Unpainted suddenly disintegrates due to physical abuse or as a... -
Page 38: Testing Temperature Sensors And Eev Coil Resistance
SERVICING To check above sensors: WARNING Damage can occur to the glass embedded terminals if the leads are not properly removed. This can result in terminal and hot oil discharging. WARNING Disconnect ALL power before servicing. 1. Disconnect power to the heat pump condensor. S-26 TESTING TEMPERATURE SENSORS AND EEV COIL 2. -
Page 39: S-40A Avpec Heater Control
SERVICING S-40A AVPEC HEATER CONTROL Electric Heat Sequencer Outputs Description The AVPEC models utilize an electronic control that provides ECM blower motor control and control of up to two electric heat se- HIGH VOLTAGE! quencers. The control has thermostat inputs for variable stage of To avoid personal injury or death due to cooling/heating, two stages of electric heat, reversing valve, and electrical shock, disconnect electrical... -
Page 40: Checking Heater Limit Control(S) (Optional Electric Heaters)
SERVICING 1. With power on to the unit, measure voltage between terminal 3. Using an ohmmeter, test the element for continuity - no read- "1" and terminal "C" on control board's thermostat connector. ing indicates the element is open. Replace as necessary. Voltage should be as noted in the table below. -
Page 41: S-61A Checking Heater Limit Control(S)
SERVICING S-61A CHECKING HEATER LIMIT CONTROL(S) HEAT KIT NOMINAL kW Each individual heater element is protected with a limit control device connected in series with each element to prevent overheat- 19/20 ing of components in case of low airflow. This limit control will open its circuit at approximately 150°F. -
Page 42: Leak Testing (Nitrogen Or Nitrogen-Traced)
SERVICING 1. Never open a system that is under vacuum. Air and moisture S-102 EVACUATION will be drawn in. WARNING 2. Plug or cap all openings. REFRIGERANT UNDER PRESSURE! 3. Remove all burrs and clean the brazing surfaces of the tubing Failure to follow proper procedures may cause with sand cloth or paper. -
Page 43: Charging
SERVICING CAUTION LOW SIDE HIGH SIDE Use refrigerant certified to AHRI standards. GAUGE GAUGE Damage to the compressor caused by the use AND VALVE AND VALVE of used refrigerant is not covered by the warranty. Most portable machines cannot clean used refrigerant to meet AHRI standards. -
Page 44: Checking Compressor Efficiency
SERVICING 5. With the system still running, remove hose and reinstall both 6. The difference between the thermometer reading and pressure valve caps. to temperature conversion is the amount of subcooling. ADD CHARGE TO RAISE SUBCOOLING. RECOVER CHARGE 6. Check system for leaks. TO LOWER SUBCOOLING. -
Page 45: Non-Condensables
SERVICING Remove the compressor and obtain an oil sample from the suc- 2 TON 10-12°F tion stub. If the oil is not acidic, either a burnout has not occurred 3 TON 13-15°F or the burnout is so mild that a complete clean-up is not neces- 4 TON 8-10°F sary. - Page 46 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 47 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 48 SERVICING 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 125 ft*. The maximum line set actual length is 100 *Includes pressure losses of any elbows, bends, etc.
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Page 49: Duct Static Pressures And/Or Static Pressure Drop Across Coils
SERVICING The following table shows refrigerant amount for every 5 feet of line. Unit Tonnage 2-Ton 3-Ton 4-Ton 5-Ton Actual Line Set Length (ft.) Refrigerant (Oz.) 15 (Factory Charge) Initial Refrigerant for Given Line Length S-203 AIR HANDLER EXTERNAL STATIC S-202 DUCT STATIC PRESSURES AND/OR STATIC PRESSURE DROP ACROSS COILS... -
Page 50: 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 51: Troubleshooting-Indoor Unit
SERVICING TROUBLESHOOTING-INDOOR UNIT WARNING HIGH VOLTAGE ! ISCONNECT POWER BEFORE SERVICING ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH A UXA LA R M ACC-OUT (Accessory) ACC-IN (Accessory) RX LED X13A FUSE X12A... - Page 52 SERVICING ROUBLESHOOTING 7 Segment (ESD) P Diagnostic LECTROSTATIC ISCHARGE RECAUTIONS Fault Displays Recall NOTE: Discharge body's static electricity before touching unit. Electrostatics can adversely affect electrical components. Use the following precautions during air handler installation and servicing to protect the integrated control module from damage. By putting the air handler, the control, and the person at the same AULT ECALL...
- Page 53 SERVICING DIAGNOSTIC CODES 7 SEGMENT LED DESCRIPTION OF CONDITION ERROR MESSAGE DISPLAY Normal Operation NO HTR KIT INSTALLED - SYSTEM CALLING FOR AUXILIARY HEAT (Minor Error Code) (No Display) HEATER KIT DIP SWITCHES NOT SET PROPERLY Check Heater Kit Dip Switches FUSE OPEN BLOWN FUSE AUXILIARY SWITCH OPEN...
- Page 54 SERVICING IRECTIONS TO OMFORT YSTEM DVANCED EATURE ENUS Press MENU, scroll down and press COMFORTNET USER MENU. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat; or press MENU>EQUIPMENT STATUS and scroll down to find the date code. After you enter the date code, select air handler to view the system menus.
- Page 55 SERVICING Set-Up SET-UP Submenu Item User Modifiable Options Comments Choose the operation mode of Humidifier OFF*, ON, IND (This selection is only displayed if HUM is selected in ACC) Choose the indoor fan speed at the time of humidification HUM FAN SPD (%) 25%, 50%*, 75% , 100% (This selection is only displayed if IND is selected in HUM and HUM is selected in ACC)
- Page 56 SERVICING 7 Segment LED 7 Segment LED 2-Digit 7 Segment Displays Description of Condition Description of Condition Display (State) Display (State) (No Display) INTERNAL CONTROL FAULT/NO POWER (No Di s pl a y) INTERNAL CONTROL FAULT/NO POWER STANDBY, WAITING FOR INPUTS STANDBY, WAITING FOR INPUTS HIGH VOLTAGE! FAN COOL-COMMUNICATING MODE ONLY...
- Page 57 SERVICING 2-Digit 7 Segment Displays 3. When the unit is having some minor error code in normal mode, 2-digit 7 segment displays show error code and airflow status. 4. When the unit is having some minor error code during defrost operation in normal mode, 2-digit 7 segment display shows state “dF,”...
- Page 58 SERVICING SETTING THE MODE DISPLAY MODE DISPLAY INTRODUCTION A 2-digit display is provided on the printed circuit board (PCB) as a backup tool to the thermostat for accessing error codes and erasing error code history of the indoor unit. Follow the information provided in this section to learn how to use the mode display.
- Page 59 SERVICING SETTING THE MODE DISPLAY <SCREEN ZERO> First Error Code Idle Release Fault Recall in less than 2 sec mins. Press Fault Recall for Error Code Second Error Code Hold Fault Recall for more than 2 sec Solid Display Press Fault Recall for Error Code Release Fault Last Error Code...
- Page 60 INDOOR UNIT ERROR CODES SERVICING...
- Page 61 INDOOR UNIT ERROR CODES SERVICING...
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Page 62: Troubleshooting-Outdoor Unit
SERVICING TROUBLESHOOTING-OUTDOOR UNIT DVANCED ENUS 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 63: System Maintenance
SERVICING DVANCED ENUS 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 Defaults (SYS SETUP RESET) settings. SET MAX CURRENT Future use. If the outdoor &... - Page 64 SERVICING DVANCED ENUS COOL SETUP SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS CL Reset YES or NO Selecting to default factory setting. Cool Airflow Trim Hi (C TR H) -15% to +15% in 3% increments Selects the cooling airflow trim amount. Cool Airflow Trim Int (C TR I) -15% to +15% in 3% increments Selects the cooling airflow trim amount.
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Page 65: Emergency Mode
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- 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 66 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 67 SERVICING 2. COOLING EMERGENCY MODE Avg. ON time OFF time Run Time Cooling emergency mode is to be used when communica- tion between the indoor and outdoor units is not func- Low Cool 7 minutes 15 minutes tioning properly and temporary cooling operation is re- Level quired.
- Page 68 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 69 SERVICING COOLING EMERGENCY MODE WIRING FOR TXV APPLI- CABLE 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 thermo- stat input terminals are to be wired when selecting a cooling airflow.
- Page 70 SETTING THE MODE DISPLAY SERVICING MODE DISPLAY INTRODUCTION A 3-digit display is provide d on the printed circuit board (PCB) as a backup tool to the thermostat for reading faults, fault history, monitoring and setting up the condensing unit. Follow the information provided in this section to learn how to u se the mode display.
- Page 71 SETTING THE MODE DISPLAY SERVICING 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 72 SETTING THE MODE DISPLAY SERVICING 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 73 SETTING THE MODE DISPLAY SERVICING 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 >...
- Page 74 SETTING THE MODE DISPLAY SERVICING 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 75 SETTING THE MODE DISPLAY SERVICING 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 76 7-SEGMENT DISPLAY SERVICING 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 77 7-SEGMENT DISPLAY SERVICING SCREEN 3 (SETTING MODE 1) Setting Contents Setting Notes 0:-15% 6:3% 1:-12% 7:6% 2:-9% 8:9% Cool Airflow Trim High 3:-6% 9:12% 4:-3% 10:15% 5:0% 0:-15% 6:3% 1:-12% 7:6% 2:-9% 8:9% Cool Airflow Trim Int 3:-6% 9:12% 4:-3% 10:15% 5:0% 0:-15%...
- Page 78 7-SEGMENT DISPLAY SERVICING SCREEN 4 (SETTING MODE 2) Setting Contents Setting Notes 0: 30min. 1: 60min. Maximum Defrost Interval 2: 90min. 3: 120min. Set Maximum Current Future Use 0:Same Level Vertical Rise 1:Outdoor Lower 2:Indoor Lower System Verification Test 0:ON 1:OFF Force Defrost Cycle 0:ON...
- Page 79 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ClimateTalk PCB LED Transmitted ClimateTalk Thermostat Fault Probable Causes Corrective Actions Fault Code Display Message ● High electrical noise OD CTRL FAIL1 Indicates a general memory error. ● Replace control board if necessary ● Faulty control board ●...
- Page 80 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 81 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 HIGH CURRENT Board detected a high current condition.
- Page 82 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 experiencing frequent low discharge ● Check the connection to thermistors; Repair/replace if ● Thermistors inoperable or improperly superheat faults.
- Page 83 TROUBLESHOOTING OUTDOOR UNIT ERROR CODES ETWORK ROUBLESHOOTING Communications is achieved by taking the difference between a The ComfortNet™ system is a fully communicating system, consti- positive dc signal and a negative dc signal. The positive dc signal tuting a network. Occasionally the need to troubleshoot the net- is termed “data 1”...
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Page 84: Thermistor Resistance And Temperature Characteristics
THERMISTOR RESISTANCE AND TEMPERATURE CHARACTERISTICS Tm : Coil Tb : Defrost Tl : Liquid Td : Discharge Ta : Ambient Ts: Suction Tgi: Indoor Gas Tli: Indoor Liquid Thermi s tor Thermi s tor Thermi s tor TEMP TEMP Vol ts Vol ts Res i s ta nce Res i s ta nce... -
Page 85: Pressure Vs Temperature Chart
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 86: Liquid Line Temperature Chart
LIQUID LINE TEMPERATURE CHART Required Liquid Line Temperature LIQUID PRESSURE REQUIRED SUBCOOLING TEMPERATURE (°F) AT SERVICE VALVE (PSIG) -
Page 87: Wiring Diagrams
WIRING DIAGRAM 2 - 5 Tons AVZC180241**, AVZC180361**, AVZC180481**, AVZC180601** Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. -
Page 88: Wiring Diagram
WIRING DIAGRAM RAM MONITOR FLASH WRITER SHARE DATA Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.