Islandaire EZ Series 25 Operating & Maintenance Manual Download Page 4 | Manualshive

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Table of Contents

Page

Contents

Section

2

Receiving Units

1

3

Installation Checklist & Notes

2

7

Operating Instructions

3

17

Electronic Board Diagnosis/Test

4

22

Heat Pump Units

5

23

Start Up Checklist

6

24

Routine Maintenance

7

24

Operational Practices

8

26

Troubleshooting Guide

9

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Summary of Contents for EZ Series 25

Page 1: ... New York City area for over 25 years Our team of experts is here to work with you to meet all your air conditioning needs We provide air conditioning service sales and will install your new air conditioning if you require it 212 686 3121 Islandaire Manual Model EZ Series 25 ...

Page 2: ...Islandaire Packaged Terminal Thru Wall Air Conditioners Heat Pumps THIS BOOK CONTAINS INFORMATION ON THE OPERATION OF YOUR UNIT KEEP IN A SAFE PLACE FOR READY REFERENCE SHOULD YOU REQUIRE ANY FURTHER INFORMATION CONTACT YOUR DEALER OR ...

Page 3: ...R SERVICE ALL LOCAL AND NATIONAL CODES MUST BE ADHERED TO WHEN INSTALLING THIS PRODUCT TO MAINTAIN WARRANTY COVERAGE THE CONDENSER COIL SURFACE MUST BE CLEANED REGULARLY AND THE ROOM AIR FILTER MUST BE CLEANED REGULARLY USE OF EXTENSION CORDS IS NOT RECOMMENDED AND WILL VOID WAR RANTY COVERAGE CAUTION USE OF EXTENSION CORDS CAN CAUSE FIRE PERSONAL INJURY AND OR PROPERTY DAMAGE HAZARDOUS MOVING PAR...

Page 4: ...n 2 Receiving Units 1 3 Installation Checklist Notes 2 7 Operating Instructions 3 17 Electronic Board Diagnosis Test 4 22 Heat Pump Units 5 23 Start Up Checklist 6 24 Routine Maintenance 7 24 Operational Practices 8 26 Troubleshooting Guide 9 ...

Page 5: ...r transport the unit on end For proper storing each carton is marked with up arrows Upon receipt of this equipment if you notice that the units were not stacked properly during transportation make a notation on the shipper s delivery ticket and be sure the unit is in normal upright position 24 hours before operating In the event that elevator transfer makes up ended positioning unavoidable absolut...

Page 6: ...and conform to the National Electrical Code USA Canadian Electrical Code Canada and local codes that have jurisdiction Inspect existing wall sleeve Refer to installation note 1 4 Ensure that supply air outlet is properly sealed to discharge of enclosure Refer to installation note 2 4 Electrical power is disconnected during installation or service Condenser air inlet and outlet MUST be clear and fr...

Page 7: ...ay be shipped from the factory with foam rubber seals applied to the plate flanges of the condenser coil The purpose of these seals is to fill the gap between the condenser coil and the outdoor louver The unit must be slid completely into the wall sleeve to insure proper seating of these seals It is important that these seals remain intact during installation Without these seals compressor life ma...

Page 8: ...is designed for operation in a normal indoor environment Operating this unit in unen closed space and exposure to construction environment may result in permanent damage 9 Inspect the unit specification label in order to identify the model number At this time voltage capacity and other special features should be noted 10 Be sure that the amperage of the dedicated electrical service to the unit is ...

Page 9: ...ge Receptacle Configuration Receptacle Number Maximum Amperage 115 15 NEMA 5 15P 12 115 20 NEMA 5 20R 16 208 230 15 NEMA 6 15R 12 208 230 20 NEMA 6 20R 16 208 230 30 NEMA 6 30R 24 277 20 NEMA 7 20R 16 Note Use HACR circuit breaker or time delay fuse Table 1 ...

Page 10: ...es desired room temperature is maintained by the thermostat setting Set thermostat to desirable comfort level Mechanical Pushbutton Switch Modes 5 button OFF All modes are off If you turn the unit off in cooling or heat pump mode wait 2 minutes before restarting HI COOL Enables cooling mode Compressor will cycle based on thermostat setting Fan will be on constant high speed LO COOL Enables cooling...

Page 11: ... 8 ...

Page 12: ...ect the operation mode heat cool fan 3 Press WARM or COLD button to set your desired temperature The setting temperature range is 60 90 F 16 32 C 4 Press the FAN SPEED button to set your desired air flow rate high low auto NOTE When unit is shut off current settings are saved in memory When unit is turned back on these settings are re stored ...

Page 13: ... 10 ...

Page 14: ... 1 of 4 speeds LOW to HIGH speed Selecting AUTO will turn fan off Turning Unit OFF 1 Press ON OFF key temperature display disappears 2 To turn fan off press FAN key until fan is in AUTO Fan Only Operation 1 Turn unit off by pressing ON OFF key temperature display disappears 2 Select fan mode by pressing FAN key Select constant fan operation 1 of 4 speeds LOW to HIGH speed Selecting AUTO will turn ...

Page 15: ... 12 NOTE When unit is shut off current settings are saved in memory When unit is turned back on these settings are restored Fig 3 ...

Page 16: ...user by pressing and holding the VENT and ON OFF keys simultaneously The display will scroll through the modes described below When the desired mode is in the display release the keys and that mode will be locked in In AU auto the control will automatically cycle between either heating or cooling to maintain set point temperature Fig 4 ...

Page 17: ...f the unit is in the OFF position While the Low Temperature Protection feature is activated the letters LO will be displayed The heat cycle will continue until the room temperature reaches 55 degrees Fahrenheit at which time the unit will satisfy and shut down All control functions will be locked out while LO is displayed Note Cutting power to the unit is the only way to interrupt unit function wh...

Page 18: ...me to enter the maxi mum and minimum temperature setting R1 R8 will be displayed every 3 seconds Release the two keys to ensure the setting is effective and the figures will last for 5 seconds The temperature setting range is between 60 F 90 F as the factory default Chart 1 Temperature setting limiting R1 R2 R3 R4 R5 R6 R7 R8 Heating Temperature Limits F 86 86 90 74 92 90 72 90 Cooling Temperature...

Page 19: ...ED display will read P or r P Unit control has control of unit r Wall thermostat has control of unit RED 24VAC Purple LS control Green High fan speed Blue Reversing valve Yellow Compressor White Heater Orange Low fan speed Black Common ground R LS GH B Y W GL C WALL MOUNTED THERMOSTAT INTERFACE R LS GH B Y W GL C ...

Page 20: ... the board 4 Reapply power to the unit wait approximately 10 seconds after which the unit will enter its normal operating mode At this time the diagnostic indicator LED will blink repeatedly These blink codes will repeat approximately every 5 seconds with a delay between bursts and are readable as follows a 0 blinks no power b 1 blink normal c 2 blinks IAT indoor air temperature probe failure chec...

Page 21: ...tional status including present modes failures airflow restriction warnings operating temperatures and past failures To enter Diagnostic Status Report mode press and hold the down arrows and while holding press the FAN SPEED key for a period of five 5 seconds The meaning of figure on display pad is as below X X 0 4 time of protection is protection mode 1 anti frost 2 overheat 3 high pressure 4 ant...

Page 22: ...qualified service technician 1 Un plug or disconnect power to the unit 2 Gain access to the electric box with the main board mounted within Locate the 9 pin connector labeled EXPANSION on the main board Pin 1 is located closest to the smaller connector labeled IAT Refer to Fig 6 Fig 6 ...

Page 23: ...n will be displayed display is where temperature and set points are viewed as each function is tested Table 2 describes the abbreviated descriptions that are displayed and unit operation Only functions available to the unit will be tested Others will simply be ignored This allows the technician to get a quick glimpse of whether the com pressor motor speed or heating components function properly du...

Page 24: ...FAN 5 Will skip if base 6 OFF 1 Will skip if base 7 F4 High Fan HI FAN 5 8 OFF 1 9 HP Low Fan F C Auto RV COMP LO FAN 10 Skip if not Heat Pump 10 C Low Fan F C Auto COMP LO FAN 10 Skip if Heat Pump 11 OFF 1 12 EH Low Fan F C Auto ELEC HEATER LO FAN 10 Skip if no Elec Heat 13 OFF 1 Skip if no Elec Heat 14 HD Low Fan F C Auto HYDRONIC LO FAN 5 Skip if no Hydronic 15 OFF DONE Skip if no Hydronic ...

Page 25: ... drops low enough the compressor heat pump will lock out entirely Activating Emergency or Backup Heat Operation Heat Pump Units with mechanical pushbut ton On units with mechanical push button controls the backup unit mounted heater if available may be enabled manually through the backup heat switch Turn off power to the unit Depending on the model it may be necessary to remove the front panel to ...

Page 26: ...e of obstructions and is sealed to louver Unit is properly sealed in sleeve Evaporator air inlet and outlet is free from obstructions and properly sealed Smoke and odor can occur on initial use of the heating element due to processing residue and or oil on the element Leave the area serviced by the unit until it is ventilated of the smoke and odor by opening doorsand windows Control operation OK O...

Page 27: ...approved filter Coils should be inspected periodically for build up of lint dirt leaves other debris and bent fins Clean coils with a soft brush and compressed air or vacuum Do NOT use sharp objects to clean coils The fan motors are permanently lubricated and do not require re oiling In areas of heavy snow and ice accumulation snow and ice should not be permitted to accumulate against the unit As ...

Page 28: ... unit with front panel removed or without filter as this will void any warranties Keep doors and windows closed Leaving them open will increase the workload on the unit and will result in higher operating cost and excessive condensate Do NOT operate unit during construction Construction dust can clog filter and cause permanent damage to other components On the mechanical push button units with uni...

Page 29: ...return air stream Compressor short cycles Low voltage Check voltage with unit running and ensure it is within nameplate limits Restricted condenser air Check for dirt or other condenser coil restriction Clean as necessary Recycling of condenser air Check for inadequate discharge air installation clearances Coil not sealed against grill Unit may not be completely pushed into sleeve Condenser fan mo...

Page 30: ...ot short circuiting air between the outlet grill and return air intake Compressor running too slow and draw ing high amps Compressor may be miswired Check capacitor Compressor may be seizing if so replace compressor Compressor will not run Fuse or circuit breaker tripped Replace or re test as necessary Defective switch Test and replace if necessary Defective thermostat Test and replace if necessar...

Page 31: ...stance across all winding pairs C S C R S R and check each terminal to the compressor shell for ground faults Replace compressor if any windings are open circuited or short circuited to the shell Seized compressor If all of the above check out OK and if pressures are equalized and compressor draws high amps and will not start compres sor is seized and needs to be replaced Unit trips fuse circuit b...

Page 32: ...l Check free rotation of the motor shaft Check voltage to the motor Check motor capacitor Check for miswiring Motor may be seizing Motor may have open windings or internal overload is defective if so replace motor Low refrigerant charge Look for telltale signs of low charge For example check the frosting pattern starting from a defrosted condition If the whole evaporator face frosts uniformly at t...

Page 33: ...ertain cause and correct Check during operation No heating Indoor room temperature above thermo stat set point Raise thermostat setting if comfort not yet achieved Faulty thermostat Test and replace if necessary Faulty fuse or circuit breaker Replace as necessary Defective switch Test and replace if necessary Defective heater Inspect and replace if necessary Automatic limit reset control will not ...

Page 34: ... Water drips from unit Sleeve not properly pitched Check sleeve for the required pitch down from indoor to out door side and level side to side Readjust as required Condensate drain clogged Clean condensate drain tube Evaporator drain pan damaged or improperly mounted Inspect realign or replace drain pan as required Unusually high moisture content in the indoor or outdoor air Under certain ambient...

Page 35: ...g Contact UPS at 1 800 PICK UPS 742 5877 to schedule the pickup or bring parts to any local UPS counter or pickup location The Return Label provided must be used to return the parts it was intended for and cannot be used for any other return 4 The defective parts must be returned to us within 30 days of the invoice date or credit will not be issued and the warranty invoice will become due and paya...

Page 36: ...Fill in information below Model Serial Part Date of Start Up Installing Company Telephone ...

Page 37: ...Research Way East Setauket NY 11733 Toll Free 1 800 886 2759 Fax 631 471 2913 Website www islandaire com E Mail sales islandaire com Manufacturer of Quality Air Conditioning and Heating Products 6140014 I ...

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