Friedrich PH09R-B, PH12K-B, PH12R-B, PH07R-B, PH09K-B User Manual

2 0 1 1

Money

Set H

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Sto

Tempera

ture

Cool

On/

Cooler

Warme

l y S

eed Saver

wer

Tim

r O

e r

ation

Room Air Conditioners

Service Manual

R-410A Models

Cool Only

115-Volt: XQ05M10*, XQ06M10*, XQ08M10*, XQ10M10

Cool with Electric Heat

115-Volt: EQ08M11

X-Star-ServMan (1-11)

Last character may vary.

Table Of Contents

Important Safety Information .......................................................................................................................................... 2-4

Unit Identiﬁ cation ............................................................................................................................................................... 5

Performance Data ............................................................................................................................................................. 6

Chassis Speciﬁ cations ...................................................................................................................................................... 6

Installation Information/Sleeve Dimensions ...................................................................................................................... 6

Electrical Data ................................................................................................................................................................... 7

Before Operating the Unit ................................................................................................................................................. 8

For Best Cooling Performance and Energy Efﬁ ciency ...................................................................................................... 8

How to Operate the XQ ..................................................................................................................................................... 9

How to Use the XQ Remote Control ............................................................................................................................... 10

How to Operate the EQ ................................................................................................................................................... 10

Electronic Control Sequence of Operation ...................................................................................................................... 11

Functional Component Deﬁ nition .................................................................................................................................... 12

Components Testing .................................................................................................................................................. 13-16

Refrigeration Sequence of Operation ............................................................................................................................. 17

R-410A Sealed System Repair Considerations .............................................................................................................. 18

Sealed Refrigeration System Repairs ........................................................................................................................ 19-22

Compressor Checks ................................................................................................................................................... 23-24

Compressor Replacement .......................................................................................................................................... 25-26

Routine Maintenance ................................................................................................................................................. 27-28

Performance Test Data Sheet ......................................................................................................................................... 29

Troubleshooting ......................................................................................................................................................... 30-36

Wiring Diagrams ........................................................................................................................................................ 37-38

Instructions for using Cooling Load Estimate Form ........................................................................................................ 39

Cooling Load Estimate Form ........................................................................................................................................... 40

Heat Load Form ......................................................................................................................................................... 41-42

Warranty .......................................................................................................................................................................... 43

Technical Assistance ....................................................................................................................................................... 44

IMPORTANT SAFETY INFORMATION

The information contained in this manual is intended for use by a qualiﬁ ed service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product.

Installation or repairs made by unqualiﬁ ed persons can result in subjecting the unqualiﬁ ed person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal.

Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered. If you install or perform service on equipment, it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which may result to you or others.

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

This is a Safety Alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol with the word “WARNING”

or “CAUTION”. These words mean:

WARNING

CAUTION

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what will happen if the instructions are not followed.

NOTICE

You can be killed or seriously injured if you do not follow instructions.

You can receive minor or moderate injury if you do not follow instructions.

A message to alert you of potential property damage will have the

word “NOTICE”. Potential property damage can occur if instructions

are not followed.

PERSONAL INJURY OR DEATH HAZARDS

ELECTRICAL HAZARDS:

• Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service.

• Make sure to follow proper lockout/tag out procedures.

• Always work in the company of a qualiﬁ ed assistant if possible.

• Capacitors, even when disconnected from the electrical power source, retain an electrical charge

potential capable of causing electric shock or electrocution.

• Handle, discharge, and test capacitors according to safe, established, standards, and approved procedures.

• Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipment with the power on to the unit.

• Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning.

• Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.

• Never operate the A/C unit with wet hands.

• Use air conditioner on a single dedicated circuit within the speciﬁ ed amperage rating.

• Use on a properly grounded outlet only.

• Do not remove ground prong of plug.

• Do not cut or modify the power supply cord.

• Do not use extension cords with the unit.

• Follow all safety precautions and use proper and adequate protective safety aids such as: gloves,

goggles, clothing, adequately insulated tools, and testing equipment etc.

• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

REFRIGERATION SYSTEM HAZARDS:

• Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair.

• Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moderate injury.

• Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s ﬂ ame or hot surfaces can cause serious burns.

• Make sure to protect personal and surrounding property with ﬁ re proof materials.

• Have a ﬁ re extinguisher at hand while using a torch.

• Provide adequate ventilation to vent off toxic fumes, and work with a qualiﬁ ed assistant whenever

possible.

• Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, ﬂ ushing etc.

• Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, safety glasses, clothing etc.

• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

MECHANICAL HAZARDS:

• Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, handling, or working around unit with moving and/or rotating parts.

• Be careful when, handling and working around exposed edges and corners of sleeve, chassis, and other unit components especially the sharp ﬁ ns of the indoor and outdoor coils.

• Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.

• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

PROPERTY DAMAGE HAZARDS

FIRE DAMAGE HAZARDS:

• Read the Installation/Operation Manual for this air conditioning unit prior to operating.

• Use air conditioner on a single dedicated circuit within the speciﬁ ed amperage rating.

• Connect to a properly grounded outlet only.

• Do not remove ground prong of plug.

• Do not cut or modify the power supply cord.

• Do not use extension cords with the unit.

• Failure to follow these instructions can result in ﬁ re and minor to serious property damage.

WATER DAMAGE HAZARDS:

• Improper installation maintenance, or servicing of the air conditioner unit, or not following the above Safety Warnings can result in water damage to personal items or property.

• Insure that the unit has a sufﬁ cient pitch to the outside to allow water to drain from the unit.

• Do not drill holes in the bottom of the drain pan or the underside of the unit.

• Failure to follow these instructions can result in result in damage to the unit and/or minor to serious

property damage.

INTRODUCTION

This service manual is designed to be used in conjunction with the operation and installation manual provided with each unit.

This service manual was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any malfunctions of this product.

This manual, therefore, will deal with all subjects in a general nature. (i.e. All text will pertain to all models).

IMPORTANT:

Front Cover

System Controls

It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a proper diagnosis and repair. (See Unit Identiﬁ cation.)

Compressor

Condenser Coil

Discharge Air

Outdoor Grille

Evaporator Coil

Sleeve

Return Air Grille/Filter

Blower Wheel

Blower Motor

Basepan

Condenser Fan Blade

UNIT IDENTIFICATION

1st Digit – Function

E = Electric Heat X = Straight Cool

2nd Digit

Q = Chassis Size

Model Number Code

X Q 08 M 1 0 A - A

7th Digit – Options

0 = Straight Cool 1 = 1 KW Heat Strip, Nominal

6th Digit – Voltage

1 = 115 Volts

9th Digit – Engineering Sufﬁ x

Indicates Modiﬁ cation (Subject to change)

8th Digit – Marketing Sufﬁ x

Indicates Modiﬁ cation (Subject to change)

3rd and 4th Digit - Approximate BTU/HR in 1000s (Cooling)

Heating BTU/Hr capacity listed in the Speciﬁ cation/Performance Data Section

RAC Serial Number Identiﬁ cation Guide

Serial Number Decade Manufactured L=0 C=3 F=6 J=9 A=1 D=4 G=7 B=2 E=5 H=8

Year Manufactured A=1 D=4 G=7 K=0 B=2 E=5 H=8 C=3 F=6 J=9

Month Manufactured A=Jan D=Apr G=Jul K=Oct B=Feb E=May H=Aug L=Nov C=Mar F=Jun J=Sept M=Dec

A A A Y 00001

5th Digit - Model Series / Year Introduced

M=2010

Production Run Number

Product Line X-Start

PERFORMANCE DATA

Installation Information / Sleeve Dimensions

* Minimum extensions when mounted in a window. ** Minimum widths achieved using one side cur tain assembly as opposed to both in a standard installation.

Circuit Rating/ Breaker

(B)

(C)

Front

SIDE VIEW

Model

Circ uit Rating

Breaker or

T-D Fuse

Plug Face

(NEMA #)

Power C ord Length (ft. )

Wall Outlet

Appe arance

XQ05M10

, XQ06M10*,

XQ08M10

, XQ10M10

EQ08 M11*

125V - 15A 5 - 15P 6

Sleeve Height Width

Depth

with Front

Shell Depth to

Louvers

Minimum

Extension

Into Room*

Minimum

Extension

Outside*

Window Width

Thru-the-wall Installation

Finished Hole

Minimum** Maximum Height Width Max. Depth

Q 14"

½"

¾"

22" 42" 14 ¼" 20" 8 ½”

All models use

environmentally

friendly R-410A

refrigerant.

R-410A

As an ENERGY STAR

partner, Friedrich Air Conditioning Co. has determined that the selected ENERGY STAR® (H) models

meet the ENERGY STAR

Estimated yearly operating cost based on a 2007 national average electricity cost of 10.65 cents per kWh. † The estimated yearly operating cost of this model was not available at the time the range was published.

Model

Cooling

Capacity Btu

Heating

Capacity Btu

Volts

Rated

Cooling

Amps

Cooling

Watts

Heating

Amps

Heating

Watts COP

Energy

Ratio

EER

Estimated

Yearly

Operating

Cost

Moisture Removal Pints/HR

Room Side

Air

Circulation

CFM Sleeve

Net

Weight

Lbs

XStar ®

XQ05M10

5500 — 115 4.5 491 — — 11.2 $39 1.0 170 Q 72

XQ06M10

6000 — 115 4.9 500 — — 12.0 † 1.0 175 Q 72

XQ08M10

7500 — 115 6.9 701 — — 10.7 $56 1.7 175 Q 71

XQ10M10

9500 — 115 9.0 970 — —

9.8 $56 2.5 180 Q 71

XStar ®

Electric Heat

EQ08M11*7500 4000 115 6.3 701 11.2 1290 2.8 10.7 $56 1.9 175 Q 72

Window Mounting Kits

Heat/Cool Models Kit No.

EQ08M11

WIKQ

Friedrich heat/cool models include accessories for thru-the-wall installation only. Window mounting requires use of optional accessory kit as listed above.

COOLING

PERFORMANCE DATA**

XQ05M10

XQ06M10

XQ08M10

Q-Chassis

XQ10M10

EQ08M11

Due to continuing research in new energy-saving technology, performance data and 8th and 9th character are subject to change without notice.

** Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp & 40% relative humidity, all systems use R410A.

EVAP. AIR TEMP. DEG. F

Discharge Air

* * * * *

CONDENSER

TEMPERATURE DEG. F

Temp.

Drop F.

57 23 117 133 60 5 19 157 410 4.5 24.0 27.0 115 15

54 26 120 152 63 12 18 150 410 4.9 25.0 21.0 115 15

51 29 119 160 63 13 25 138 420 6.3 32.0 25.5 115 15

47 33 131 176 59 12 32 132 490 9.8 57.0 24.0 115 15

49 31 120 162 60 14 27 133 420 7.0 7.6 32.0 25.5 115 15

Discharge Temp Suction Temp Super Heat Sub-Cooling

OPERATING PRESSURES ELECTRICAL RATINGS

Suction Discharge Amps Cool Amps Heat

Locked Rotor

Amps

R-410A

REF.

Charge in

OZ.

BREAKER FUSE

Voltage

60 Hertz Amps

ELECTRICAL DATA

Not following the above WARNING could result in ﬁ re or electically unsafe conditions which could cause moderate or serious property damage.

Read, understand and follow the above warning.

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or installation.

All electrical connections and wiring MUST be installed by a qualiﬁ ed electrician and conform to the National Electrical Code and all local codes which have jurisdiction.

Failure to do so can result in personal injury or death.

NOTICE

FIRE HAZARD

Wire Size Use ONLY wiring size recommended for single outlet branch circuit.

Fuse/Circuit Breaker Use ONLY the correct HACR type and size fuse/circuit breaker. Read electrical ratings on unit’s

rating plate. Proper circuit protection is the responsibiity of the homeowner.

Grounding Unit MUST be grounded from branch circuit through service cord to unit, or through separate

ground wire provided on permanently connected units. Be sure that branch circuit or general purpose outlet is grounded.

Receptacle The ﬁ eld supplied outlet must match plug on service cord and be within reach of service cord.

Do NOT alter the service cord or plug. Do NOT use an extension cord. Refer to the table above for proper receptacle and fuse type.

The consumer - through the AHAM Room Air Conditioner Certiﬁ cation Program - can be certain that the AHAM Certiﬁ cation Seal accurately states the unit’s cooling and heating capacity rating, the amperes and the energy efﬁ ciency ratio.

*HACR: Heating Air Conditioning and Refrigeration

WARNING

ELECTRICAL SHOCK HAZARD

Make sure your e lectrical r ecept acle h as th e same confi guration as your air c ondit ioner ’s plug. If differ ent, consul t a L icensed Ele ctrician.

Do no t use plug adapters. Do no t use an ex tension cor d. Do no t remove gr ound prong.

Always plug into a grounded 3 prong outlet. Failure to follow these instructions can result in electrical shock, serious injury or death.

To start unit

siti,elc at pec erreporpaotnideggulpdnadellatsnisirenoitidnocriaruoyfI readytogo.The first time the unit is started,the compressorwilldelay forthree minutes. See Automatic Component Protection on the following page.

Touch the Power button once. Theunit will automatically be in Cool mode with the temperature set at 75°F (24°C) and the fan speed at F1, the sleep setting.

To set mode of operation

When you

rst turn the unit on, it will be in the Cool mode (light on), with

constant fan.

Touch the Mode button once to activate the MoneySaver®(light on).

MoneySaver

ros serp mocehthtiwnafehtselcyctahterutaefasi

so that the fan does not run all the time. This saves energy and

eromrofnaftnats nocreferpyamuoyrO.noit ac i dim uh edsevorpmi

ehthcuot,naftnatsnocotnruterot(tnem evomria Mode button two

more times).

In order to run the fan by itself, do the following:

Continuing from MoneySaver®mode(lighton),touchtheMode button once to activate the FAN ONLY feature (light on).

The FAN ONLY setting will circulate air in the room without the compressor coming on.

To adjust temperature

Use the Mode button to select either the COOL or MoneySaver

function

COOLER – Touch the button to lower the room air temperature.

WARMER – Touch the button to raise the room air temperature.

Press both the and ehthctiwsotemitemasehttasnottub

temperature readout from Fahrenheit (°F) to Celsius (°C).

Repeat step 7 to switch from °C back to °F.

To adjust fan speed

Touch the FanSpeed button tosee the currentsetting. Touch itagain to changespeed. F1 is the lowest setting (SLEEP SETTING /LOW), F2 is MEDIUM, and F3 is HIGH.

To activate Smart Fan

There is a fourth option, SF, when selecting the fan speed. This is the SMART FAN function. SMART FAN DOES NOT OPERATE IN CONJUCTION WITH THE FAN ONLY MODE.

Smart Fan will adjust the fan speed automatically to maintain the desired comfort level. Forexample, if theoutside doorsin your home are opened for an extended period of time, or more people enter a room, Smart Fan may adjust to a higher fan speed to compensate

for the increased heat load. This keeps you from having to adjust the

fan speed on your own.

How to operate the Friedrich room air conditioner (XQ models)

Temp/Hour

Cool

MoneySaver

Fan Only

Clock

StartTime

Stop Time

Power

Fan

Speed

Mode

Timer

Set

Hour

10 11 12

3 4

18 9 2

Figure 5

To set the hour clock

Touch the Set Hour button to see the current setting (clock light comes on). The number that is displayed is the approximate time (hour only). Use the and buttons to change thesettings. BE SURE TO SET A.M. AND P.M. ACCORDINGLY. (P.M. is indicated

by a red light in the upper left corner of the display).

To set the timer

NOTE: Set the HOUR CLOCK beforeattempting to set timer functions.

Youcan set theSTART and STOP timesa minimum of one hour apart, and

a maximum of twenty-three hours apart.

After setting the time, press the Set Hour button once (Start light comes on). Use the and buttons to select the time that the unit will START.

After selecting the START time, press the Set Hour button once more (Stop light comes on). Use the

and buttons to select thetime

that the unit will STOP. After selecting the stopping time, press the Set Hour button once.

Press the Timer On/Off button (light turns on) to activate the timer

function. To deactivate this function, press the Timer On/Off button

once again (light turns off). Once the on and off times have been selected, they will remain in memory and cycle daily until changed.

NOTE: If the unit is unplugged or thepower is interrupted, the HOUR must be reset or the Timer On/Off will not function when desired.

Automatic component protection

Yourunit is equipped with AutomaticComponent Protection. To protect the

compressor ofthe unit,there is a three minute start delay if you turnthe unit off or ifpoweris interrupted.The fan operation will notbe affected. Also, if you switch from Cool mode to Fan Only, and switch back to Cool mode, there is a three minute delay before the compressor comes back on.

3 4

Mode

Set

Hour

Cool

Money Saver

Fan Only

Clock

Start Time

Stop Time

Fan

Speed

Timer

On/Off

10 11 12

18 9 2

Temp/Hour

Power

X Star

Figure 3

To set the timer

NOTE: You can set the START and STOP times a minimum of one hour apart, and a maximum of 23 hours apart.

TIMER START - Press Start .gniloocrofemittratstnerrucehtweivot Continue pressing the Start button until you arrive at the start time you desire. The start time for cooling will then be set.

TIMER STOP - Press the Stop button. Continue pressing the Stop

button until you arrive at the stop time you desire. The stop time for

cooling will then be set.

TIMER ON / OFF - Press the On/Off button to activate (light on) or deactivate (light off) the timer. Once the on and off times have been selected, they will remain in memory and cycle daily until changed.

NOTE: If the unit is unplugged or the power is interrupted, the Set Hr. function must be reset or the On/Off function will not work.

How to use the remote control

To start unit

POWER - Press the Power button once. The unit will automatically

start in the mode and fan speed it was last left on.

To set mode of operation

COOL - Press the Cool button to automatically switch the operating

mode to COOL.

FAN ONLY - Press the Fan Only button if you want to run the fan only.

MoneySaver®- Press the MoneySaver®button to activate the

MoneySaver

feature. This feature cycles the fan with the compres-

sor so that the fan does not run all the time.

To adjust temperature setting

WARMER - Press the Warmer button to raise the temperature

setting.

COOLER - Press the Cooler button to lower the temperature

setting.

To adjust fan speed

FAN SPEED - Press the Fan Speed button to see the current set-

ting. Press again to change the fan speed. F1 is the lowest setting

(SLEEP / LOW), F2 is MEDIUM, F3 is HIGH, and SF is the SMART

FAN setting.

To set the hour clock

SET HOUR CLOCK - Press Set Hr. once to see the current clock

setting. Continue pressing the button until you arrive at the current time (Hour only). Minutes are not shown on the display. Make sure

that the A.M. / P.M. setting is correct.

Additional RC1 wireless remote controls can be purchasedfrom your Friedrich dealer.

(XQ models)

Money

Fan

Set Hr.

Stop

Start

Temperature

Fan

Cool

On/O

Cooler

Warmer

Only Speed Saver

Power

Timer Operation

How To Operate The EQ08

Function Control Knob

The left knob is a six position control that allows you to select heat or cool in either low speed or high speed. Plus you can select fan only if you wish.

The right hand knob is the thermostat - turn it clockwise for cooler, counter-clockwise for warmer.

Thermostat Knob

ELECTRONIC CONTROL SEQUENCE OF OPERATION

MODE CONTROL

The mode control pad(s) allow the selection of the operating modes of the unit.

There is a two second delay before the mode activates its appropriate relay.

OPERATING SEQUENCE / CHARACTERISTICS AND FEATURES Compressor Operation

The run state of the compressor is determined by the difference between the indoor ambient temperature and the set temperature. See speciﬁ c mode of operation for details.

Compressor Time Delay: 180 seconds

This feature is initiated every time the compressor is deenergized, either due to: (1) satisfying the temperature set point (2) changing mode to fan only (3) a power interruption or (4) turning the unit off

The compressor is also time delayed for 3 minutes when the control is ﬁ rst plugged in or power is restored after failure. When the compressor cycles off as a result of satisfying the “load”, the time delay is typically timed out during the off cycle. Compressor time delay is bypassed by “Test Mode”.

Return Air Temperature Sensor

The control range is 60°F to 90°F +/- 2.0°F.

Frost Protection Sensor

Temperature settings: Disable the compressor when sensing 30° +/- 3°F for 2 minutes continuously. Enable compressor @ 55° +/- 5°F.

The fan should not be affected by the Frost Protection. It should continue to function normally if freeze protection is called for.

COOL MODE FOR XQ MODELS

When in the COOL mode, the control will turn on the compressor when the indoor temperature is 1.5°F above the set point and turn off the compressor when the ambient gets below the set point by 1.5°F. The fan will run continuously.

MONEY SAVER MODE

When in MONEY SAVER mode, the system will be turned on when the indoor temperature gets above the set point by

0.75°F and turns off when the indoor temperature gets below the set point by 0.75°F. The fan will turn on 5 seconds before the compressor and turn off 5 seconds after the compressor stops. If the compressor is delayed the fan will continue to run while the compressor restarts. If the thermostat remains satisﬁ ed for more than approximately 9 minutes, the fan will turn on for a period of 90 seconds for air sampling. Operation in MONEY SAVER mode will light both the MONEY SAVER and COOL indicators.

FAN ONLY MODE

When in the FAN ONLY mode, the compressor will not operate. The fan will run continuously at the user-selected speed (see “Fan Speed Set” below). Smart Fan is not available in FAN ONLY Mode.

FAN SPEED SET

XQ fan speed is changed by pressing FAN SPEED button and scrolling through F1, F2, F3 and SF (Smart Fan) in the digital display.

There will be a 2 second delay before the fan speed changes to prevent unnecessary switching of the relays during fan speed selection.

SMART FAN

On the XQ model, smart fan is activated by pressing the

FAN SPEED button and scrolling through speeds until “SF” appears in the digital display. Using the remote

control, Smart Fan is selected by the fourth push of Fan Speed button.

Smart fan changes fan speeds based on the temperature differential between the ambient and set temperatures.

CHECKING ROOM TEMPERATURE

Check the room temperature at the electronic control pad by pressing the “FAN SPEED” button and the “TEMP ” button at the same time on XQ models.

The indoor temperature will display for 10 seconds. Indoor temperature can be viewed in all modes, including the TEST mode. The display can be changed back to SET temperature by pressing any key, except the ON/OFF button, or after 10 seconds has elapsed.

KEEP ALIVE

The electronic control has a memory to retain all functions and status as set up by the user in the event of a power failure. Once power is restored to the unit there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated, providing that the mode was set for cooling and the set point temperature has not been met in the room.

REBOOT/RESET THE CONTROL BOARD

With unit on, press “MODE” and “TEMP/HOUR ” buttons simultaneously for 10 seconds. If the panel will reboot, you will hear the fan come on and the temperature window will read 60°F. If this happens, turn the unit off for about 10 seconds and then turn it back on to ﬁ nish the reboot cycle. If the panel does not reboot, you possibly need to replace it.

MECHANICAL COMPONENTS

Plenum assembly Diffuser with directional louvers used

to direct the conditioned airﬂ ow.

Blower wheel Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned, room side air though the heat exchanger and delivering conditioned air into the room.

Slinger fan blade Attaches to the outdoor side of the fan motor shaft and is used to move outside air through the condenser coil, while slinging condensate water out of the base pan and onto the condenser coil, thus lowering the temperature and pressu

res within the coil.

ELECTRICAL COMPONENTS

Thermostat Used to maintain the speciﬁ ed room side

comfort level

System switch Used to regulate the operation of the fan

motor, the compressor or to turn the unit off. For troubleshooting, refer to the wiring diagrams and schematics in the back

of this service manual.

Capacitor Reduces line current and steadies the voltage supply, while greatly improving the torque characteristics of the fan motor and compressor motor.

MoneySaver® switch When engaged, it sends the power supply to the fan motor through the thermostat, which allows

Smart Fan

Automatically adjusts the fan speed to main-

tain the desired room temp.

for a cycle-fan operation.

Fan Motor Dual-shafted fan motor operates the indoor blower wheel and the condenser fan blade simultaneously.

Heating element Electric resistance heater, available in

EQ08 model.

Heat anticipator Used to provide better thermostat and room air temperature control.

HERMETIC COMPONENTS

Compressor Motorized device used to compress refrigerant

through the sealed system.

Capillary tube A cylindrical meter device used to evenly dis-

tribute the ﬂ ow of refrigerant to the heat exchangers (coils.)

FUNCTIONAL COMPONENT DEFINITIONS

COMPONENTS TESTING

TESTING THE ELECTRONIC CONTROL BOARDS FOR XQ MODELS

Fan

Speed

Timer

On/Off

Mode

Set

Hour

Cool

Money Saver

Fan Only

Clock

Start Time

Stop Time

Activating Test Mode: Activate test mode by pressing at the same time the

“MODE” button and the “TEMP ” button on XQ models. LEDs for Hour, Start, and Stop will blink 1 bps

while Test Mode is active.

Test Mode has duration of 90 minutes. Test Mode can be activated under any conditions, including Off. Test Mode is cancelled by pressing the On/Off button, unplugging the unit, or when the 90 minutes is timed out. All settings revert to the factory default settings of Cool, 75 degrees F, Timer and Set Hour features are nonfunctional.

Test Mode overrides the three-minute lockout, all delays for compressor and fan motor start / speed change, and no delay when switching modes.

X Star

Power

Temp/Hour

ERROR CODE LISTINGS

E1 SHORT CYCLE SITUATION: Deﬁ ned as (compressor

powered on before the three minute time delay ten times in one hour. Investigate and correct short cycling problem.

E2 KEYBOARD STUCK ERROR: If key button(s) are pressed continuously for twenty seconds or more. If MODE key is stuck, unit will default to cool. Exit Error Code Mode to see if error “E2” is no longer displayed and unit is functioning. Replace board if “E2” still displays after exiting Error Code Mode.

E3 FROST PROBE OPEN: Normal operation is allowed. Ohm frost probe. Replace probe if ohm value not read. If ohm value is present replace board.

E4 FROST PROBE SHORT: Normal operation allowed. Replace probe.

E5 INDOOR PROBE OPEN: Control assumes indoor ambient temperature is 90 degree F and unit will operate. Ohm indoor probe. Replace probe if ohm value not read.

E6 INDOOR PROBE SHORT: Control assumes ambient temperature is 90 degree F and unit will operate. Replace probe.

NOTE: All Error Code displays for Frost & Indoor Probe will allow unit to operate. Unit may or will ice up if faulty components not replaced.

FROST PROBE SENSOR: disables compressor at 35 degrees F.

During Test Mode, the default settings are; Unit ON, Money Saver ON, 60°F, and High fan speed.

Activating Error Code Mode: (Submode of Test Mode) Unit must be in Test Mode to enter Error Code Mode

1. Activate Error Code Mode by pressing the “TIMER ON/ OFF” button on XQ models. LED for the “TIMER ON/OFF” will ﬂ ash 1 bps while Error Code Mode is active. Pressing

the “TEMP/HR ” button will display 00. Consecutive presses will scroll through all error codes logged. Press the “TEMP/HR ” button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.

IMPORTANT: Error Codes are cleared from the log by exiting from Error Code Mode. To exit on XQ models, press Timer On/Off button. Or unplug unit to exit Error Code Mode. Plug unit in after 5 seconds to resume normal operation of unit.

INDOOR PROBE SENSOR: Control range is 60°F to 90°F +/- 2°F.

Indoor temperature will be displayed by pressing: (XQ units) The Fan Speed button and the “TEMP ”

button.

The indoor temperature will be displayed for 10 seconds. The display will change back to the Set Point temperature by pressing any key button except for the On/Off button. The indoor temperature can be viewed in all modes, including test mode.

TEST:

1. Remove leads from thermostat.

2. Tur n ther m ostat knob cl ockwise to its co ldest position.

3. Test for continuity between the two terminals. Contacts should be closed.

4. Turn thermostat knob counterclockwise to its warmest position.

5. Test for continuity - contacts should be open.

NOTE: The thermostat must be within the temperature

range listed to open and close.

To maintain the comfort level desired, a cross ambient type thermostat is used. The thermostat has a range from 60° ±2°F to 92° ±3°F. The thermos

tat bulb is positioned in front of the evaporator coil to sense the return air temperature. Thermostat malfunction or erratic operation is covered in the troubleshooting section of this manual.

THERMOSTAT (“EQ08” Models)

(See Figure 17)

This thermostat is single pole-double throw, cross ambient with a range of 60° to 92°F and a differential of ±2°F. Terminal “2” is common.

Figure 17 Thermostat (EQ Model)

Figure 18 Thermostat

TEST: Cooling/Heating Models: Remove wires from thermostat

and check continuity between terminal “2” (common) and “3” for cooling. Check between terminals “2” (common) and “1” for heating. Also check that contacts in thermostat open after placing in either position. NOTE: Temperature must be within range listed to check thermostat. Refer to the troubleshooting section in this manual for additional information on thermostat testing.

THERMOSTAT ADJUSTMENT

No attempt should be made to adjust thermostat. Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration, it is suggested that the thermostat be replaced rather than calibrated. Thermostat bulb must be straight to insure proper performance.

THERMOSTAT BULB LOCATION

The position of the bulb is important in order for the thermostat to function properly. The bulb of the thermostat should be located approximately 45° to a maximum of 60° from horizontal. Also, do not allow the thermostat bulb to touch the evaporator coil. (See Figures 17 and 18)

Thermostat sensor holder 020 to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown

Figure 19 Thermostat Bulb Location (EQ Model)

COMPONENTS TESTING (Continued)

EQ08 SYSTEM CONTROL SWITCH - TEST

“EQ08” SYSTEM CONTROL SWITCH – TEST

Turn knob to phase of switch to be tested. There must be continuity as follows:

1. “Fan Only” Position – between terminals “MS” and “H”

2. “Hi Cool” Position – between terminals “L1” and “C” and “MS” and “H”

3. “Low Cool” Position – between terminals “L1” and “C” and “MS” and “LO”

4. “Low Heat” Position – between terminals “L2” and “2” and “MS” and “LO”

5. “Hi Heat” Position – between terminals “L2” and “2” and “MS” and “H”

System Control Switch (EQ Models)

ELECTRIC SHOCK HAZARD

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

WARNING

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