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Daikin DX17VSS series - User Manual

Daikin DX17VSS series
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INSTALLATION INSTRUCTIONS
AIR CONDITIONER
DX17VSS AIR CONDITIONING
INSTALLATION & SERVICE REFERENCE
Index
ImportAnt sAfety InstruCtIons ............................................. 1
shIppIng InspeCtIon .............................................................. 1
Codes & regulAtIons .......................................................... 2
feAtures.............................................................................. 2
preCAutIons for seleCtIng A loCAtIon ................................. 2
preCAutIons for InstAllAtIon ............................................... 3
InstAllAtIon CleArAnCes ...................................................... 3
rooftop InstAllAtIons ......................................................... 3
sAfety ConsIderAtIons......................................................... 4
refrIgerAnt lInes ............................................................... 6
refrIgerAnt lIne ConneCtIons ............................................. 8
leAK testIng (nItrogen or nItrogen-trACed) ...................... 8
system stArt-up proCedure ................................................ 8
stArt-up proCedure detAIl .................................................. 9
eleCtrICAl ConneCtIons ...................................................... 9
AIr CondItIoner AdvAnCed feAture menu ........................... 30
wIrIng dIAgrAm ................................................................ 33
CApACItor .......................................................................... 34
troubleshootIng ............................................................... 36
settIng the mode dIsplAy .................................................. 41
7-segment dIsplAy ............................................................. 47
stArt up CheCKlIst ........................................................... 51
imPoRtant saFety instRuCtions
The following symbols and labels are used throughout this
manual to indicate immediate or potential safety hazards. It is
the owner’s and installer’s responsibility to read and comply
with all safety information and instructions accompanying
these symbols. Failure to heed safety information increases
the risk of personal injury, property damage, and/or product
damage.
WARNING
HIGH VOLTAGE !
dIsConneCt All power before servICIng.
m
ultIple power sourCes mAy be present. fAIlure
to do so mAy CAuse property dAmAge, personAl
Injury or deAth.
WARNING
only personnel thAt hAve been trAIned to InstAll, Adjust, ser-
vICe or repAIr (hereInAfter, “servICe”) the equIpment speCIfIed
In thIs mAnuAl should servICe the equIpment. the mAnufACturer
wIll not be responsIble for Any Injury or property dAmAge ArIs-
Ing from Improper servICe or servICe proCedures. If you servICe
thIs unIt, you Assume responsIbIlIty for Any Injury or property
dAmAge whICh mAy result. In AddItIon, In jurIsdICtIons thAt re-
quIre one or more lICenses to servICe the equIpment speCIfIed In
thIs mAnuAl, only lICensed personnel should servICe the equIp-
ment. Improper InstAllAtIon, Adjustment, servICIng or repAIr of
the equIpment speCIfIed In thIs mAnuAl, or AttemptIng to InstAll,
Adjust, servICe or repAIr the equIpment speCIfIed In thIs mAnuAl
wIthout proper trAInIng mAy result In produCt dAmAge, property
dAmAge, personAl Injury or deAth.
shiPPing insPeCtion
Always keep the unit upright; laying the unit on its side or top
may cause equipment damage. Shipping damage, and sub-
sequent investigation is the responsibility of the carrier. Verify
the model number, speci cations, electrical characteristics,
and accessories are correct prior to installation. The distributor
or manufacturer will not accept claims from dealers for trans-
portation damage or installation of incorrectly shipped units.
English
01_EN_3P515859-1B.indd 1 1/16/2018 14:34:56

Table of Contents

Questions and Answers

  • J
    Jacob MartinAug 18, 2025
    What to do if my Daikin DX17VSS shows HI PRESSURE C error?
    • K
      Karen PorterAug 18, 2025
      If your Daikin Air Conditioner displays 'HI PRESSURE C' (Critical), it could be due to several reasons: a blocked or restricted condenser coil, a stop valve not fully open, an overcharge of refrigerant, the outdoor fan not running, an inoperable high-pressure switch (HPS), or a faulty indoor EEV coil. You should check and clean the condenser coil and lines, ensure the stop valve is fully open, verify the refrigerant charge level, inspect the outdoor fan motor and wiring, and check the indoor EEV and its coil. If none of these steps resolve the issue, consider replacing the control board.
  • B
    breannagarciaAug 21, 2025
    What to do if my Daikin DX17VSS shows LOW PRESSURE C error?
    • J
      Jerry KaneAug 21, 2025
      If your Daikin Air Conditioner displays 'LOW PRESSURE C', it could be due to a stop valve not being completely open, a restriction in the refrigerant lines, a low refrigerant charge, a refrigerant leak, an inoperable or improperly connected low-pressure sensor, an indoor fan motor not functioning correctly, or a faulty indoor EEV, EEV coil or control board. Check the opening of the stop valve, look for restrictions in the refrigerant line, check the refrigerant charge level, test for system leaks, check the connection to the low-pressure sensor, and inspect the indoor EEV, EEV coil and control board. Replace components as needed.
  • D
    Deborah ValdezAug 23, 2025
    What to do if my Daikin DX17VSS Air Conditioner shows HI PRESSURE M error?
    • A
      Anthony FritzAug 23, 2025
      If your Daikin Air Conditioner displays 'HI PRESSURE M' (Minor), it might be caused by a blocked or restricted condenser coil, a stop valve that isn't fully open, an overcharge of refrigerant, a non-running outdoor fan, an inoperable high pressure switch (HPS), or a faulty indoor EEV coil. To solve this, check and clean the condenser coil and lines, make sure the stop valve is fully open, verify the refrigerant charge level, inspect the outdoor fan motor and wiring, and check the indoor EEV and its coil. If the problem persists, consider replacing the control board.
  • M
    Michaela LiAug 26, 2025
    What to do if my Daikin Air Conditioner shows LOW PRESSURE M error?
    • J
      Joshua LewisAug 26, 2025
      If your Daikin Air Conditioner displays 'LOW PRESSURE M', it could be due to a stop valve not being completely open, a restriction in the refrigerant lines, a low refrigerant charge, a refrigerant leak, an inoperable or improperly connected low-pressure sensor, an indoor fan motor not functioning correctly, or a faulty indoor EEV, EEV coil or control board. Check the opening of the stop valve, look for restrictions in the refrigerant line, check the refrigerant charge level, test for system leaks, check the connection to the low-pressure sensor, and inspect the indoor EEV, EEV coil and control board. Replace components as needed.
  • J
    Jessica EdwardsAug 28, 2025
    What to do if my Daikin DX17VSS Air Conditioner shows COMPRESSOR FAIL error?
    • D
      dsuttonAug 28, 2025
      If your Daikin Air Conditioner shows a 'COMPRESSOR FAIL' error, it could be due to a stop valve not being completely open, a lost phase in the compressor wire, or compressor motor failure. You should check that the stop valve is fully open, inspect the wire between the control board and the compressor, and inspect the compressor motor for proper function. Replace components as necessary.
  • S
    Sean LopezAug 30, 2025
    What does PCB OR FAN FAIL mean on my Daikin DX17VSS?
    • E
      Emily WardAug 30, 2025
      If your Daikin Air Conditioner displays 'PCB OR FAN FAIL', it could be due to an obstruction in fan rotation, the outdoor fan motor not being connected properly, the outdoor fan not running, a faulty control board, or electrical noise. Check and clean the grille of any debris, check the wiring from the outdoor fan motor to the control board, and check the outdoor fan motor and wiring. If necessary, replace the control board.
  • L
    Larry FowlerSep 1, 2025
    What to do if my Daikin DX17VSS Air Conditioner shows OD CTRL FAIL2 error?
    • E
      Emma MckeeSep 1, 2025
      If your Daikin Air Conditioner displays 'OD CTRL FAIL2', it could be caused by the outdoor fan motor not being connected properly, a faulty control board or electrical noise. Check the wiring from the outdoor fan motor to the control board and repair if needed. If necessary, replace the control board.
  • B
    burnsstephanieSep 4, 2025
    What does ACE TEMP FAIL mean on my Daikin DX17VSS?
    • B
      Brooke TaylorSep 4, 2025
      If your Daikin Air Conditioner displays 'ACE TEMP FAIL', it may be due to high or low voltage from the supply, a faulty control board, or noise. Correct any low/high line voltage conditions, contacting your local utility if needed. If that doesn't solve the issue, replace the control board.
  • G
    gregory90Sep 6, 2025
    What to do if my Daikin Air Conditioner shows HIGH DISCH TEMP error?
    • S
      Shawn GeorgeSep 6, 2025
      If your Daikin Air Conditioner displays 'HIGH DISCH TEMP', this may be caused by a discharge thermistor that is inoperable or improperly connected. Check the discharge thermistor resistance and connections, and repair or replace as needed.
  • M
    mcculloughshaneSep 8, 2025
    What to do if my Daikin DX17VSS shows LOW DISCH TEMP error?
    • A
      Amy PruittSep 8, 2025
      If your Daikin Air Conditioner displays 'LOW DISCH TEMP', this may be caused by a discharge thermistor that is inoperable or improperly connected. Check the discharge thermistor resistance and connections, and repair or replace as needed.

Summary

IMPORTANT SAFETY INSTRUCTIONS

SHIPPING INSPECTION

Inspect unit for damage and verify model/specs before installation.

CODES & REGULATIONS

FEATURES

PRECAUTIONS FOR SELECTING A LOCATION

PRECAUTIONS FOR INSTALLATION

INSTALLATION CLEARANCES

ROOFTOP INSTALLATIONS

SAFETY CONSIDERATIONS

REFRIGERANT LINES

Condenser BELOW Evaporator

Inverted loop requirement for suction line when condenser is below evaporator.

Condenser ABOVE Evaporator

Oil trap requirement for suction line when condenser is above evaporator.

REFRIGERANT LINE CONNECTIONS

LEAK TESTING (NITROGEN OR NITROGEN-TRACED)

SYSTEM START-UP PROCEDURE

START-UP PROCEDURE DETAIL

ELECTRICAL CONNECTIONS

OVERCURRENT PROTECTION

Details on protecting the unit from overcurrent conditions.

HIGH VOLTAGE CONNECTIONS

Guidelines for routing and terminating high voltage power and ground wires.

LOW VOLTAGE CONNECTIONS

Instructions for connecting low voltage communication and thermostat wires.

CALCULATE REFRIGERANT CHARGE

EQUIVALENT LENGTH CALCULATION

CONNECT AIR CONDITIONER TO SYSTEM

SYSTEM START-UP TEST

SET THERMOSTAT TO CHARGE MODE

ADJUST REFRIGERANT LEVEL

MEASURE SUBCOOLING TO VERIFY CHARGE

FIELD SELECTABLE BOOST MODE

DEHUMIDIFICATION

DEHUMIDIFICATION TIPS

Recommendations for effective dehumidification operation.

NIGHT MODE

FIELD SELECTABLE NIGHT MODE

Adjusting settings for quiet operation and noise reduction.

COMFORTNETTM SYSTEM

OVERVIEW

Explains the system's communication and components.

COMFORTNET SYSTEM ADVANCED FEATURES

Accessing additional system information and setup.

DIRECTIONS TO AIR CONDITIONER ADVANCED FEATURE MENUS

Guide to navigating the advanced feature menus.

DIAGNOSTICS

STATUS

Displays current system information for diagnostics.

MAINTENANCE

SYSTEM SETUP

EQUIPMENT TEST

COOL SET-UP

COOL RUN VALUES

Setting maximum compressor RPM for cooling.

AIR CONDITIONER ADVANCED FEATURE MENU

WIRING DIAGRAM

CAPACITOR

COOLING ANALYSIS CHART

TROUBLESHOOTING

NETWORK TROUBLESHOOTING

Troubleshooting communication issues within the ComfortNet system.

SETTING THE MODE DISPLAY

MODE DISPLAY INTRODUCTION

Overview of the 3-digit PCB display's functions.

NAVIGATING THROUGH THE DISPLAY SCREENS

How to move between different screens on the display.

FAULT CODE HISTORY NAVIGATION

Accessing and viewing past fault codes.

MONITORING MODE NAVIGATION

Navigating the display to monitor system variables.

SETTINGS MODE 1 NAVIGATION

Navigating to adjust system settings in Mode 1.

SETTINGS MODE 2

SETTINGS MODE 2 NAVIGATION

Navigating to adjust system settings in Mode 2.

7-SEGMENT DISPLAY

SCREEN 0 (Display FAULT CODE)

Displaying the current fault code.

SCREEN 1 (Display FAULT CODES)

Viewing the history of the last six fault codes.

SCREEN 2 (MONITOR MODE)

Monitoring system variables.

SPLIT SYSTEMS

AIR CONDITIONING HOMEOWNERS ROUTINE MAINTENANCE RECOMMENDATIONS

General maintenance advice for homeowners.

REPLACE OR CLEAN FILTER

Instructions for filter maintenance.

COMPRESSOR

Information on compressor maintenance requirements.

MOTORS

Information on motor lubrication and maintenance.

CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)

Precautions for cleaning the outdoor coil.

BEFORE CALLING YOUR SERVICER

Troubleshooting steps before contacting a technician.

Start-up Checklist For Unitary Inverter

Pre Start-Up

Items to check before initial system power-up.

Start-Up

Data entry points for system start-up parameters.

Daikin DX17VSS series Specifications

General IconGeneral
SeriesDX17VSS
SEER RatingUp to 17
HSPFUp to 9.5
RefrigerantR-410A
Operating Voltage208/230V
Phase1
TypeAir Conditioner
Compressor TypeInverter

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