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THERMOSTATIC EXPANSION VALVES

SYMPTOMS

POSSIBLE CAUSE

CHECK OR REMEDIES

High Superheat, Low Suction Pressure

Moisture freezing and blocking valve

Recover charge, install filter-drier,
evacuate system, recharge

Dirt or foreign material blocking valve

Recover charge, install filter-drier,
evacuate system, recharge

Low refrigerant charge

Correct the charge

Vapor bubbles in liquid line

Remove restriction in liquid line
Correct the refrigerant charge

Remove non-condensible gases

Size liquid line correctly

Misapplication of internally equalized

Use correct TEV

valve

Plugged external equalizer line

Remove external equalizer line
restriction

Undersized TEV

Replace with correct valve

Loss of charge from power

Replace power head or complete

head sensing bulb

TEV

Charge migration from sensing bulb

Ensure TEV is warmer than

to power head (Warm power head

sensing bulb

with warm, wet cloth. Does valve
operate correctly now?)

Improper superheat adjustment

Adjust superheat setting counter-

(Only applicable to TEV with adjustable

clockwise

superheat settings)

Valve feeds too much refrigerant,

Moisture causing valve to stick open.

Recover refrigerant, replace filter-

with low superheat and higher than

drier, evacuate system and then nor-

mal suction pressure

recharge

Dirt or foreign material causing

Recover refrigerant, replace filter-

valve to stick open

drier, evacuate system and
recharge

TEV seat leak (A gurgling or hissing

Replace the TEV

sound is heard AT THE TEV during
the off cycle, if this is the cause.)
NOT APPLICABLE TO BLEED
PORT VALVES.

Oversized TEV

Install correct TEV

Incorrect sensing bulb location

Install bulb with two mounting
straps, in 2:00 or 4:00 position on
suction line, with insulation

Low superheat adjustment

Turn superheat adjustment

(only applicable to TEV with

clockwise

adjustable superheat setting)

Incorrectly installed, or restricted

Remove restriction, or relocate

external equalizer line

external equalizer

Compressor flood back upon start up

Refrigerant drainage from flooded

Install trap riser to the top of the

evaporator

evaporator coil

Compressor in cold location

Install crankcase heater on
compressor

Any of the causes listed under

Any of the solutions listed under

Symptoms of Problem #2

Solutions of Problem #2

Содержание ASL-JEC Series

Страница 1: ...OOLED CONDENSING UNITS ASL JEC 18 SEER EQUIPPED WITH THE COMFORT CONTROL2 SYSTEM AND FEATURING DUAL DRIVE COMPRESSORS IN SELECT MODELS INSTALLATION INSTRUCTIONS INDICATES METRIC CONVERSIONS ISO 9001 2...

Страница 2: ...EQUIPPED WITH THE COMFORT CONTROL2 SYSTEM 18 12 1 Control Description 18 12 2 Comfort Control2 Control Wiring 20 12 3 Comfort Control2 Diagnostic Codes in Dual Drive 20 12 4 Comfort Control2 ICC Contr...

Страница 3: ...SORIES OR DEVICES MAY ADVERSELY AFFECT THE OPERATION OF THE AIR CONDITIONER AND MAY ALSO ENDANGER LIFE AND PROPERTY THE MANUFACTURER DISCLAIMS ANY RESPONSIBILITY FOR SUCH LOSS OR INJURY RESULTING FROM...

Страница 4: ...PRESSURES USE APPROPRIATE CARE WHEN USING THIS REFRIGER ANT FAILURE TO EXERCISE CARE MAY RESULT IN EQUIPMENT DAM AGE OR PERSONAL INJURY CAUTION THE COMPRESSOR HAS AN INTERNAL OVERLOAD PROTECTOR UNDER...

Страница 5: ...heat gain calculation must be made A heat gain calculation begins by measuring all external surfaces and openings that gain heat from the surrounding air and quantifying that heat gain A heat gain cal...

Страница 6: ...Amperes Face Area Sq Ft m2 No Rows Fins Per Inch CFM L s R 410a Oz g Net Lbs kg Shipping Lbs kg Height H Inches Length L Inches Width W Inches ELECTRICAL PHYSICAL DIMENSIONAL DATA Voltage Operating R...

Страница 7: ...directly on the unit cabinet In coastal areas locate the unit on the side of the building away from the water front Shielding provided by a fence or shrubs may give some protection but cannot violate...

Страница 8: ...Unit Applications Clearances below 6 inches will reduce unit capacity and efficiency Do not reduce the 60 inch discharge or the 24 inch service clearances Multiple Unit Applications When multiple con...

Страница 9: ...tion instructions 4 0 REFRIGERANT CONNECTIONS All units are factory charged with Refrigerant 410A All models are supplied with service valves Keep tube ends sealed until connection is to be made to pr...

Страница 10: ...etard Hoses need to have a service pressure rating of 800 psig Recovery cylinders need to have a 400 psig service pressure rating DOT 4BA400 or DOT BW400 Combustibility At pressures above 1 atmosphere...

Страница 11: ...TING LINE SET IS THOROUGHLY CLEANED OF ANY OLD OIL OR DEBRIS 6 0 INDOOR COIL REFER TO INDOOR COIL MANUFACTURER S INSTALLATION INSTRUC TIONS IMPORTANT The manufacturer is not responsible for the perfor...

Страница 12: ...l runs 7 4 Tubing Installation Observe the following when installing correctly sized type L refrigerant tubing between the condensing unit and evaporator coil If a portion of the liquid line passes th...

Страница 13: ...0 0 0 1 2 12 70 0 0 0 0 0 0 25 7 62 50 15 24 75 22 86 100 30 48 125 38 1 150 45 72 Liquid Line Size Outdoor Unit Above Indoor Coil Cooling Only Does not apply to Heat Pumps Total Equivalent Length Fee...

Страница 14: ...el Line Size Connection Size Inch I D mm Line Size Inch O D mm Outdoor Unit BELOW Indoor Coil Cooling Only Does not apply to Heat Pumps Total Equivalent Length Feet m 5 8 15 88 Same as Liquid Line Siz...

Страница 15: ...t are closed Clean the inside of the fittings and outside of the tubing with steel wool or sand cloth before soldering Always keep chips steel wool dirt etc out of the inside when cleaning Assemble tu...

Страница 16: ...mpressors are identified as Compressor A and Compressor B When facing the access panel Compressor A is on the left and Compressor B is on the right See Figure 4 8 2 Comfort Control2 System Control Ide...

Страница 17: ...nkcase Heater Operation Supplemental Crankcase heat is required to prevent refrigerant migration in sys tems with relatively high system refrigerant charges Each Dual Drive compressor has its own cran...

Страница 18: ...nd the heat pump Start the heat pump and the furnace with the thermostat Make sure the blower is operating 12 0 CONDENSING UNITS EQUIPPED WITH THE 11 0 COMFORT CONTROL2 SYSTEM Comfort Control2 is the...

Страница 19: ...ed High pressure control is an automatic resetting device Ambient Temperature Sensor included with all applications Included with all applications TEST and SW2 Buttons TEST and SW2 buttons used to ent...

Страница 20: ...lation is required Class II insulation is required if run separate Low voltage wiring may be run through the insulated bushing provided in the 7 8 hole in the base panel up to and attached to the pig...

Страница 21: ...st stage heating has been received Flashing lower case h and 2 A command for second stage heating has been received The 3 minute time delay can be bypassed when a command for compressor operation is p...

Страница 22: ...SYSTEM CONTROL WIRING 5 The ICC actively protects the compressor from harmful operation during a fault condition When the ICC detects a condition that could damage the compressor the ICC will enter ac...

Страница 23: ...rs Active Protection Code L6 Compressor open start circuit If the ICC detects current in the run circuit without current present in the start circuit the ICC will lockout the compressor to keep it fro...

Страница 24: ...de TEST and SW2 Buttons Enter FAULT RECALL mode by pressing the TEST and SW2 buttons at the same time with insulated probes for one 1 second and release When entering and exiting FAULT RECALL mode the...

Страница 25: ...minimum run timer Wait unit timer has expired or press the TEST button to reset timer d Defrost Active The unit is undergoing a defrost cycle Normal operation t Test Mode The ICC is in TEST mode 10 13...

Страница 26: ...ICC will attempt a restart every twenty 20 minutes for up to four 4 hours Check for damaged miswired or wrong run capacitor Check for broken wires loose connectors or miswired compressor Check compre...

Страница 27: ...mperature Fault The sensor detects an abnormally low or high outdoor ambient temperature Check unit placement If the outdoor unit is in a high temperature area wait until the ambient temperature drops...

Страница 28: ...rough the insulated bushing provided in the 7 8 hole in the base panel up to and attached to the pigtails from the bottom of the control box Conduit can be run to the base panel if desired by removing...

Страница 29: ...Typical Two Stage Thermostat ASL Condensing Unit Y2 C R Y2 Field Installed Line Voltage WIRING INFORMATION Factory Standard ODD R Y1 Y2 G W2 R Y1 C L Y Y BL R BR W R DHM W1 W2 W1 C G HPN Air Handler...

Страница 30: ...C is displayed on the 7 segment LEDs Upper case C indicates second stage cooling operation 3 First Stage Heating Operation When the ICC receives a call for first stage heating operation h1 is display...

Страница 31: ...flash a L on the dual 7 segment LEDs followed by a 21 I IM MP PO OR RT TA AN NT T This mode of active protection must be manually reset 31 4 The 3 minute time delay can be bypassed when a call for com...

Страница 32: ...flash a L on the 7 segment LEDs followed by a 6 IMPORTANT This mode of active protection must be manually deactivated 5 Open Run Circuit Lockout The ICC will display a flashing L followed by a flashi...

Страница 33: ...um of six individual faults can be stored A maximum of three consecutive identical faults are stored 33 Fault Recall Mode TEST and SW2 Buttons Enter FAULT RECALL mode by pressing the TEST and SW2 butt...

Страница 34: ...onduit with the power supply Class I insu lation is required Class II insulation is required if run separate Low voltage wiring may be run through the insulated bushing provided in the 7 8 hole in the...

Страница 35: ...y of high humidity problems Low indoor airflow reduces total capacity and causes coil icing Serious harm can be done to the compressor by low airflow such as that caused by refrigerant flooding Heat p...

Страница 36: ...e quate otherwise evacuate the entire system Use the factory charge shown in Table 1 of these instructions or unit data plate Note that charge value includes charge required for 15 ft of standard size...

Страница 37: ...ump or AC If the communications wires are wired backwards at any point the greem LED D52 will always be on If this happens check the wires at each point to ensure they are not reversed Once all device...

Страница 38: ...ld control Remove the memory card from the old control but leave it attached to the unit by the plastic tether replace the control and reinstall the memory card on the new control If for some reason t...

Страница 39: ...ult history and refer to Diagnostic Chart Note For solid comm LED check comm wiring term bus switches at ICC and AH ctrls Refer to panel cover documentation for Fault Code Troubleshooting Check fault...

Страница 40: ...ow Recirculation of Inoperative Compressor Inoperative Indoor Blower Outdoor Air Valves Non condensibles Outdoor Check Valve Low on Charge Closed Higher than Ambient Restricted Indoor Air Entering Out...

Страница 41: ...peed of blower or reduce restriction replace air filter High head low vapor pressures Restriction in liquid line expansion device or filter drier Remove or replace defective component Flowcheck piston...

Страница 42: ...osis High voltage Power company problem Have problem corrected High head pressure Overcharge Check system charge Dirty heat pump coil Clean coil Faulty or wrong size Replace fan motor heat pump fan mo...

Страница 43: ...High pressure switch Low pressure switch Ambient thermostat Solid state protection control or internal thermal sensors Compressor timed off on control or interlock No voltage on line side Blown fuses...

Страница 44: ...m out of calibration Customer misuse FLOODED STARTS SYMPTOMS POSSIBLE CAUSES CHECK OR REMEDIES Liquid in the compressor shell Faulty or missing crankcase heater Replace crankcase heater Too much liqui...

Страница 45: ...le clockwise superheat settings Valve feeds too much refrigerant Moisture causing valve to stick open Recover refrigerant replace filter with low superheat and higher than drier evacuate system and th...

Страница 46: ...ther refrigerant or refrigerant oil flowing position around the circumference of through suction line the suction line Unequal refrigerant flow through Ensure sensing bulb is located evaporator circui...

Страница 47: ...dercharge Low Low High Low Low Liquid Restriction Drier Low Low High High Low Low Evaporator Airflow Low Low Low Low Low Dirty Heat Pump High High Low Low High Low Outside Ambient Temperature Low Low...

Страница 48: ...48 FIGURE 13 WIRING DIAGRAM FOR ASL 024JEC 036JEC 19 0 WIRING DIAGRAMS...

Страница 49: ...49 FIGURE 14 WIRING DIAGRAM FOR ASL 039JEC 048JEC 060JEC DUAL DRIVE...

Страница 50: ...50...

Страница 51: ...51...

Страница 52: ...52 CM 1108...

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