Related Manuals for Haier GE NS23AM
Summary of Contents for Haier GE NS23AM
- Page 1 Service NS23AM HIGH EFFICIENCY AIR Manual CONDITIONER SYSTEM UP TO 23 SEER (22 SEER2) READ CAREFULLY. KEEP THESE INSTRUCTIONS 31-5000746 Rev. 0 07-23 GEA...
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Page 2: Table Of Contents
SERVICE MANUAL NS23AM This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to the potential for personal injury or death. Table of Contents WARNING ..........3 Typical Unit Parts Arrangement ........6 Improper installation, adjustment, alteration, service or General Information .............9 maintenance can cause property damage, personal injury... - Page 3 MODEL NUMBER GUIDE 23 A 36 36 M – XX BRAND MAJOR / MINOR N-GE REVISION PRODUCT REFRIGERANT S-SPLIT 4-R410A SEER VOLTAGE A-208/230 1PH 60HZ APPLICATION A-AIR CONDITIONER DESIGN VARIANT H-HEAT PUMP M-MODULATING/INVERTER COOLING CAPACITY (1000BTU/HR) 24, 36, 48, 60 PHYSICAL AND ELECTRICAL DATA Compressor Outdoor Fan Motor...
- Page 4 SOUND RATINGS Estimated Sound Pressure (dBA)2 Estimated Sound Pressure (dBA)2 Sound Sound Approximate Distance3 Approximate Distance3 Model Power1 Power1 (Low) (High) One Meter Two Meters Three Meters One Meter Two Meters Three Meters (3.3 feet) (6.6 feet) (9.8 feet) (3.3 feet) (6.6 feet) (9.8 feet) NS23A24MA4...
- Page 5 FAN BLADE SPECS Fan Blade NS23A Dia. #of Blades Pitch Part # 26" 100017-02 36, 48, 60 26" 100017-03 ACCESSORIES Description Where Used Kit Number H4TXV01 (TXV Kit) 1.851363 H4TXV02 (TXV Kit) 1.851364 H4TXV03 (TXV Kit) 48, 60 1.851365 Freezestat 3/8 tubing 93G35 Crankcase Heater...
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Page 6: Typical Unit Parts Arrangement
Typical Unit Parts Arrangement -24, -36 Units -48, -60 Units Figure 1. Control Panel Components 31-5000746 Rev. 0 Page 6... - Page 7 Figure 2. Component Locations NS23A24M, 36M, 48M 31-5000746 Rev. 0 Page 7...
- Page 8 Figure 3. Component Locations NS23A60M (Scroll Compressor Model) 31-5000746 Rev. 0 Page 8...
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Page 9: General Information
CAUTION IMPORTANT As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take - Rockwell Harness Scale minimum). Fully insert the care while handling this equipment and wear gloves wrench into the valve stem recess. and protective clothing. -
Page 10: Installation
OPERATING BALL-TYPE SERVICE VALVE ACCESS SERVICE PORT 1 - Remove stem cap with an appropriately sized wrench. A service port cap protects the service port core from contamination and serves as the primary leak seal. 2 - Use an appropriately sized wrench to open. To open valve, rotate stem counterclockwise 90°. - Page 11 Discharge Air Building WARNING Structure To prevent personal injury, as well as damage to panels, unit or structure, observe the following: While installing or servicing this unit, carefully stow all removed panels so that the panels will not cause injury to personnel, objects or nearby structures.
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Page 12: New Or Replacement Line Set
Location Minimum Clearance New or Replacement Line Set Service box 30” Top of unit* 48” Between units 24” IMPORTANT Against wall 6” If this unit is being matched with an approved line set or indoor unit coil that was previously charged with NOTE: At least one side should be unobstructed by a wall or mineral oil, or if it is being matched with a coil which other barrier. - Page 13 The NS23AM is a variable-capacity cooling system utilizing variable speed compressor technology. With the WARNING variable speed compressor and variable pumping capacity, When using a high pressure gas such as additional consideration must be given to refrigerant piping nitrogen to pressurize a refrigeration or sizing and application.
- Page 14 Maximum Total Maximum Linear Preferred Vapor Maximum Vapor Maximum Linear Required Vapor Tonnage Equivalent (actual) Length Line Sizes for Riser (ft) Liquid Lift (ft) Riser Size Length (ft) (ft) Horizontal Runs 5/8” 3/4” 7/8” 7/8” Table 5. NS23AM Line Set Guidelines – 51 to 150 Linear Feet in Length Total Linear Length (ft.) Tonnage Line SIze...
- Page 15 LINE SET IMPORTANT — Refrigerant lines must not contact structure. INSTALLATION REFRIGERANT LINE SET — INSTALLING Line Set Isolation — The following illustrations are VERTICAL RUNS (NEW CONSTRUCTION SHOWN) examples of proper refrigerant line set isolation: NOTE — Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the REFRIGERANT LINE SET —...
- Page 16 It is recommended that vertical suction risers not be up- sized. Proper oil return to the compressor should be Procedure maintained with suction gas velocity. DISTRIBUTOR TUBES Filter Drier LIQUID LINE ORIFICE HOUSING ® TEFLON RING and reliability. If the drier is shipped loose, it must be FIXED ORIFICE void, if the drier is not installed.
- Page 17 CYLINDER CONTAINING STUB END GAUGE CLEAN R-410A TO BE TWO-PIECE PATCH PLATE LIQUID LINE MANIFOLD (UNCASED COIL ONLY) USED FOR FLUSHING ORIFICE EXPANSION (Positioned to deliver liquid HOUSING VALVE DISTRIBUTOR refrigerant) TUBES ® TEFLON HIGH RING VAPOR LINE OUTDOOR SERVICE VALVE ®...
- Page 18 Refrigerant Piping - Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include an expansion valve metering device (purchased separately) at check expansion valve unit can be installed internal or external to the indoor coil. In applications where an uncased coil is 1/2 Turn INDOOR EXPANSION VALVE INSTALLATION ®...
- Page 19 Refrigerant Piping - Brazing Procedures CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line.
- Page 20 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water-saturated cloths around service valve bodies and copper tube stubs. Use additional water-saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the vapor valve stem port.
- Page 21 Leak Test and Evacuation LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN HFC-410A CONNECT GAUGE SET A - Connect the high pressure hose of an HFC-410A manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port.
- Page 22 EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD liquid line service valve...
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Page 23: Electrical - Circuit Sizing And Wire Routing
When utilizing a two-stage conventional 24VAC thermostat, Electrical - Circuit Sizing and Wire Routing four wires are required to control the outdoor unit (R, C, Y1 and Y2). Refer to the NS23AM In the U.S.A., wiring must conform with current local codes conventional 24VAC two-stage thermostat. - Page 24 WARNING WARNING Fire Hazard. Use of aluminum wire with this product Failure to use properly sized wiring and circuit breaker may result in property damage. Size wiring and circuit injury or death. Use copper wire only with this product. plate. Qty.
- Page 25 OUTDOOR UNIT CONNECT CONDUIT TO CUTOUT AND ROUTE HIGH CONNECTS TO VOLTAGE WIRING (2) RAST 6-PIN CONNECTORS LOW VOLTAGE MAKE-UP BOX GROMMET AND CABLE TIE ROUTE CONTROL WIRING THROUGH USE WATERTIGHT GROMMET AND CONDUIT FOR HIGH SECURE WITH VOLTAGE CABLE TIE Figure 15.
- Page 26 O.D. SENSOR O.D. SENSOR OPTIONAL OPTIONAL ACC2 ACC2 ACC1 ACC1 RAST 6-PIN RAST 6-PIN CONNECTOR CONNECTOR RAST 6-PIN RAST 6-PIN CONNECTOR CONNECTOR VARIABLE CAPACITY TWO STAGE / CONVENTIONAL 24VAC VARIABLE CAPACITY TWO STAGE / CONVENTIONAL 24VAC OUTDOOR UNIT VARIABLE SPEED THERMOSTAT OUTDOOR UNIT VARIABLE SPEED...
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Page 27: Outdoor Unitary Control
Outdoor Unitary Control Jumpers and Terminals 7 SEGMENT DISPLAY CHARGE MODE JUMPER (CHRG MODE) CHARGE MODE AND OPERATION MODE JUMPER DETAIL OPERATION MODE JUMPER PUSH BUTTON RAST TERMINALS FOR THERMOSTAT WIRING CONNECTION Figure 18. 31-5000746 Rev. 0 Page 27... -
Page 28: Unit Operation
7-Segment Display and Push Button Information labels concerning the outdoor control 7-segment display and push button operations are available on the unit control panel cover. Alarms Alarm information is provided on the unit control panel cover. Charge Mode Jumper To initiate the NS23AM Charge Mode function, install the jumper across the two Charge Mode Pins (CHRG MODE) on the outdoor control. - Page 29 Designator Description Input Output Common Switched 24VAC Unused on NS23AM, for heat pump applications only nominal Unused on NS23AM, for heat pump applications only 24VAC common Low pressure switch (not used on NS23AM) 5ma @ 18VAC Low pressure switch sensing connection (not used on 5ma @ 18VAC NS23AM) High pressure switch...
- Page 30 WARNING - Electric Shock Hazard. Can cause injury or death. Unit must be grounded in accordance with national and local codes. The 4 pins in P6 have the potential of transferring up to 250 volts to the unit cabinet ground. Designator Description Input...
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Page 31: Servicing Units Delivered Void Of Charge
WARNING - Electric Shock Hazard. Can cause injury or death. Unit must be grounded in accordance with national and local codes. The 4 pins in P6 have the potential of transferring up to 250 volts to the unit cabinet ground. Designator Description Input... -
Page 32: System Operation And Service
System Operation and Service 7-Segment Alert and System Status Codes Resetting Alert Codes Alert codes are displayed using the 7-segment display Alert codes can be reset manually or automatically: located on the outdoor control. Manual Reset NOTE: System fault and lockout codes take precedence Manual reset can be achieved by one of the following over system status codes (cooling, heating operating methods:... - Page 33 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 34 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 35 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 36 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 37 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 38 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 39 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 40 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 41 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 42 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 43 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 44 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 45 POWER-UP / RESET: 7-SEGMENT POWER-UP DISPLAY STRING FIRMWARE VERSION: During initial power-up or reset, the first item displayed is the outdoor control firmware version. Example to the right shows firmware version 2.3. UNIT TYPE: The next item displayed is the self discovery unit type.
- Page 46 Description Example of Display Idle Mode Idle Mode Display OFF. Soft Disable Mode: Top and bottom horizontal line and decimal If indoor or outdoor control displays Soft Disable code: Soft Disable Mode: Top and bottom horizontal line and decimal and outdoor). 2) Cycle power to the control that is displaying the Soft Disable The control in Soft Disable Mode is indicated by the following: code.
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Page 47: Unit Selection Code For Outdoor Control
Description Example of Display Charge Mode: When unit is in the charge mode, Suction The following string is repeated: pressure (SPxxx), Suction Temp (Stxx.x), Superheat (SHxx.x), pause pause pause Liquid pressure (LPxxx), Liquid Temp (Ltxx.x) and subcooling pause pause Repeat (SCxx.x) will be scrolled on the 7-segment display Table 12. - Page 48 Display Symbol Display Fan Test and Display String Option or Character Displayed > pause > unit > pause > unit capacity in during start- BTUs > pause > unit code. If 3 horizontal bars are displayed during any sequence of this display string, it indicates up or power recycling Indicates cooling Capacity.
- Page 49 Field Test Mode Operation NS23AM Charge Mode Operation with a Conventional 24VAC Thermostat mode and allows the installer to perform multiple tests on On applications with a conventional 24VAC thermostat, the the control / unit. charge mode jumper must be installed on the Charge Mode Pins after providing a Y1 cooling demand to the NS23AM Diagnostic Mode to initiate the Charge Mode.
- Page 50 Display Display and Action (normal operation) Cooling operation. Shows cooling stage C1 or C2 operating. E in the display string represents the active error code(s) in the outdoor unit. Example: pause pause pause pause in the display string represents the outdoor ambient temperature in °F at the outdoor sensor on the outdoor unit. Example: pause When unit is in the charge mode, Suction pressure (SPxxx), Suction Temp (Stxx.x), Superheat (SHxx.x), Liquid...
- Page 51 When installing a replacement outdoor control, the unit selection code may have to be manually assigned using the Configuring Unit Selection Code Power-up - Unit selection code (two-digit number) displayed represents unit size code (outdoor unit capacity). During initial power-up, firmware version, unit type, unit capacity and unit selection code will appear on the 7-segment display.
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Page 52: System Overview
System Overview Maintenance Refer to the applicable Thermostat Installer Setup Guide Outdoor Unit installer or service agency. At the beginning of each cooling The outdoor control provides the following functions: season, the system should be checked as follows: • Internal switching of outputs. •... - Page 53 Indoor Unit Blower motors are factory-lubricated and permanently sealed. No more lubrication is needed. Adjust blower speed for cooling. Measure the pressure drop over the coil to determine the correct blower CFM. Refer to the unit information service manual for pressure drop tables and procedure.
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Page 54: Unit Wiring Diagram
Unit Wiring Diagram RT13 RT36 AMBIENT LIQUID COMPRESSOR SENSOR SENSOR S87 LOW S173 S4 HIGH PRESSURE COMPRESSOR RESISTOR PRESSURE TOP CAP SWITCH SWITCH (10K) SWITCH INVERTER GROUND NOTE- FOR USE WITH COPPER CONDUCTORS ONLY. REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPACITY AND MAXIMUM OVERCURRENT PROTECTION SIZE REFER TO COMPRESSOR IN UNIT FOR ACTUAL TERMINAL ARRANGEMENT... -
Page 55: Unit Sequence Of Operation
Unit Sequence of Operation Status, unit Fault and lockout LED Codes and unit system operation interactions. On 24 VAC power-up or outdoor reset, the outdoor control shall perform the following tasks: Start the anti-short cycle 3-minute delay in the outdoor control. Check status of the temperature sensor and pressure devices. - Page 56 SUCTION Y1 DEMAND *SUCTION PRESSURE OR COOLING PRESSURE ABOVE CUT-OUT IS CONTACTOR DEMAND CUT-OUT OF IGNORED FOR ENERGIZED 40 PSIG 90 SECONDS SUCTION PRESSURE SUCTION PRESSURE CUT-OUT IS BYPASSED IF OUTDOOR ABOVE CUT-OUT AMBIENT TEMPERATURE IS 15ºF OF 40 PSIG OR BELOW CONTACTOR DE-ENERGIZED...
- Page 57 HIGH Y1 DEMAND TOP CAP PRESSURE CONTACTOR OR COOLING CLOSED CLOSED SWITCH (S173) SWITCH (S4) ENERGIZED DEMAND HIGH PRESSURE CLOSED OPEN SWITCH (S4) CONTACTOR DE-ENERGIZED The thermostat terminates demand when the contactor is de-energized. If demand is satisfied when alarm is not active, the OPEN 5-strike counter resets.
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Page 58: Component Testing
Component Testing Verifying High Pressure Switch and Low Pressure Protection Operation Operation: The unit's pressure S4 high pressure switch is factory wired into the control on the HPS terminals. NOTE: the same protection as a tradition low pressure switch. If the event the suction pressure transducer fails, back up protection Low Suction Pressure Protection –... - Page 59 Suction Pressure DC Voltage Output Suction Pressure DC Voltage Output (PSIG) (Pin 2 to Pin 3) (PSIG) (Pin 2 to Pin 3) 0.49 2.69 0.69 2.89 0.89 3.09 1.09 3.29 1.29 3.49 1.49 3.69 1.69 3.89 1.89 4.09 2.09 4.29 2.29 4.49 2.49...
- Page 60 SUCTION Y1 DEMAND *SUCTION PRESSURE OR COOLING PRESSURE ABOVE CUT-OUT IS CONTACTOR CUT-OUT OF DEMAND IGNORED FOR ENERGIZED 40 PSIG 90 SECONDS SUCTION PRESSURE CUT-OUT SUCTION PRESSURE IS BYPASSED IF OUTDOOR ABOVE CUT-OUT AMBIENT TEMPERATURE IS 15ºF OF 40 PSIG OR BELOW CONTACTOR DE-ENERGIZED...
- Page 61 HIGH TOP CAP CONTACTOR PRESSURE CLOSED Y1 DEMAND CLOSED SWITCH (S173) ENERGIZED SWITCH (S4) HIGH PRESSURE CLOSED OPEN SWITCH (S4) CONTACTOR DE-ENERGIZED 1. The thermostat will terminate demand when the contactor is de-energized. If demand is satisfied when alarm is not active, the 5-strike counter will reset.
- Page 62 High Pressure Switch Protection Errors NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Alert...
- Page 63 ELECTRICAL CONNECTION PLUG LOCATION TOP CAP SUCTION COMPRESSOR (NOT THERMOSTAT MOTOR SHOWN) (S173) DISCHARGE COMPRESSOR ACCUMULATOR EQUALIZATION VALVE ROTARY COMPRESSION CHAMBER NS23AMA ROTARY COMPRESSOR CUTAWAY OF TYPICAL ROTARY COMPRESSOR (NOT ACTUAL NS23AMA COMPRESSOR) Figure 33. NS23AM Rotary Compressor Detail (All Models except NS23A60M) Status Codes: When the compressor is running, the 7-segment display will show the compressor capacity.
- Page 64 Figure 34. Compressor Operation, Checkout and Status/Error Codes 31-5000746 Rev. 0 Page 64...
- Page 65 Error Codes: NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 66 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 67 NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 68 Crankcase Heater, Checkout and Status / Error Codes Operation: Crankcase Heater (HR1) Compressors in all units are equipped with a 40 watt belly-band type crankcase heater. The heater prevents liquid from accumulating in the compressor. The heater is controlled by the crankcase heater thermostat. Crankcase Heater Thermostat (S40) Crankcase heater thermostat S40 controls the crankcase heater in all units and is located on the liquid line (see Figure 2 for location).
- Page 69 Figure 37. Checking Crankcase Heater Thermostat Status Code: None Error Codes: None Compressor Sound Cover All units come with a soft-sided polyethylene molded outer shell compressor sound cover. The cover helps reduce any unwanted operating sounds from the compressor. The cover features a hook/loop closure system for ease of installation on the compressor.
- Page 70 Liquid Line Filter Drier (NS23A60M Scroll compressor model only) is designed to remove moisture and foreign matter, which can lead to compressor failure. Figure 40. Liquid Line Filter Drier Top Cap Switch Operation, Checkout and Status / Error Codes Operation: Top Cap Thermal Sensor Switch (S173) Some units are equipped with a compressor-mounted normally closed temperature switch that prevents compressor damage due to overheating caused by internal friction.
- Page 71 Status: None Error: NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Alert...
- Page 72 Outdoor Fan Operation and Checkout Operation: NS23AM units have a variable speed ECM fan motor. The variable speed ECM fan motor is controlled by PWM fan output when the compressor is running and will vary the fan speed to match the compressor capacity. Low Ambient Operation: The NS23AM units have factory installed low ambient operator that will control the condenser fan motor based upon liquid line temperature.
- Page 73 RT13 RT36 AMBIENT LIQUID COMPRESSOR SENSOR SENSOR S87 LOW S173 S4 HIGH PRESSURE COMPRESSOR RESISTOR PRESSURE SWITCH TOP CAP SWITCH (10K) SWITCH INVERTER GROUND NOTE- FOR USE WITH COPPER CONDUCTORS ONLY. REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPACITY AND MAXIMUM OVERCURRENT PROTECTION SIZE REFER TO COMPRESSOR IN UNIT FOR ACTUAL TERMINAL ARRANGEMENT...
- Page 74 Outdoor Control Operation, Checkout and Status / Error Codes Operation: The outdoor control is a microprocessor-based device for use with variable-capacity compressors up to 5-tons in capacity operating on 24VAC residential power. The outdoor control integrates the functionality of maintaining compressor speed, 7 SEGMENT DISPLAY CHARGE...
- Page 75 Error Codes: NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 76 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 77 Unit Sensor Operation, Checkout and Status /Error Codes Operation: 6-Pin Sensor Harness (DIS, AMB, COIL) Discharge Sensor (R7 - No Sensor) There is no sensor located on positions 5 and 6 of the connector. A 10K Ohm resistor installed between pins 5 and 6 on the cable harness provides continuity for this circuit.
- Page 78 NOTE: When checking the ohms across a sensor, be aware that a sensor showing a resistance value that is not within the may be faulty and the sensor harness will need to be replaced. CRANKCASE HEATER THERMOSTAT (S40) OPENS AT 70ºF, CLOSES AT 50ºF OUTDOOR AMBIENT TEMPERATURE...
- Page 79 Degree Degree Degree Degree Resistance Resistance Resistance Resistance Fahrenehit Fahrenehit Fahrenehit Fahrenehit 136.3 2680 56.8 16657 21.6 44154 -11.3 123152 133.1 2859 56.0 16973 21.0 44851 -11.9 125787 130.1 3040 55.3 17293 20.5 45560 -12.6 128508 127.3 3223 54.6 17616 20.0 46281 -13.2...
- Page 80 Error Codes: NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 81 Status Codes: NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 82 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 83 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 84 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 85 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 86 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 87 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 88 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 89 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
- Page 90 NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat Inverter Flash Code...
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Page 91: System Refrigerant
System Refrigerant Charge Mode Jumper To initiate the NS23AM Charge Mode function, install the jumper across the two Charge Mode Pins (CHRG IMPORTANT MODE) on the outdoor control. The Charge Mode can be used when charging the system with refrigerant, checking The system must be operating at full capacity during the refrigerant charge, pumping down the system and charging. - Page 92 MANIFOLD GAUGE SET HIGH GAUGE SET OUTDOOR UNIT CONNECTIONS FOR TESTING AND CHARGING REFRIGERANT TANK CHARGE IN LIQUID PHASE SUCTION LINE DIGITAL SCALE TO LIQUID TEMPERATURE SENSOR LINE SERVICE (LIQUID LINE) PORT TEMPERATURE SENSOR CLOSE MANIFOLD GAUGE SET VALVES AND CONNECT THE CENTER HOSE TO A CYLINDER OF HFC-410A SET FOR LIQUID PHASE CHARGING. CONNECT THE MANIFOLD GAUGE SET'S LOW PRESSURE SIDE TO THE SUCTION LINE SERVICE PORT.
- Page 93 Use the WEIGH-IN method for adding initial refrigerant charge, and then use SUBCOOLING method for for verifying refrigerant charge. WEIGH-IN CHARGING METHOD NOTE - Insulate liquid line when it is routed through areas where 64ºF (17.7ºC) and Below the surrounding ambient temperature could become higher than Adjust amount for variation in the temperature of the liquid line or when pressure drop is equal line set length and liquid line...
- Page 94 °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig °F Psig 100.8 137.1 178.5 231.6 290.8 365.0 445.9 545.6 102.9 139.6 181.6 235.3 295.1 370.0 451.8 552.3 105.0 142.2 184.3 239.0 299.4 375.1 457.6 559.1 107.1 144.8 187.7...