Carrier Air V User manual

PRODUCT INFORMATION
Model Number
Date in Service
Unit Serial Number
Ceiling Assembly Serial Number
INSTALLER
Date of Installation
Name
Address
Phone
CARRIER RECREATIONAL VEHICLE
AIR CONDITIONER
OWNER’S GUIDE
OPERATION & INSTALLATION

A FEW WORDS ABOUT YOUR NEW AIR CONDITIONING UNIT 2
ELECTRICAL DATA 2
OPERATING INSTRUCTIONS 4
CEILING UNIT DISPLAY 4
REMOTE CONTROL DESCRIPTIONS 5
REMOTE CONTROL PREPARATION 7
UNIT OPERATION 8
ENERGY SAVING TIPS 9
INSTALLATION INSTRUCTIONS 9
CEILING ASSEMBLY FRAME INSTALLATION REQUIREMENTS 9
SUPPLY DUCTING AND REGISTERS 10
PREPARATION AND POSITIONING THE ROOF TOP UNIT 12
CEILING ASSEMBLY FRAME PREPARATION AND MOUNTING 13
COMPLETING THE INSTALLATION 17
TROUBLESHOOTING 18
NORMAL MAINTENANCE PROCEDURES 19
PART DIAGRAM 20
CONTENTS
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

Important!!!
You must register your product either:
Online at www.airv.com
OR
Mail in the completed paper form supplied with your product.

OWNER’S GUIDE -
A FEW WORDS ABOUT YOUR NEW
AIR CONDITIONING UNIT
2
Thank you for choosing the Air V, Carrier Recreational Vehicle Air Conditioner, for your cooling needs.
You can feel confident in your selection because the same pride in craftsmanship and engineering knowledge
that goes into Carrier equipment to cool the Astrodome in Texas, the famous Sistine Chapel in Rome,
the Washington DC Halls of Congress and thousands of other installations worldwide has gone
into the construction of your unit.
In addition to cooling the room, your Carrier unit will also filter and dehumidify the room’s air.
The Air V air conditioners quietly give you maximum cooling comfort. Now you can “Feel Carrier’s Cool”!
This manual is designed to help you with all the information you need for installing, operating and maintaining your
new unit. In addition, this contains many comforts and technological features your unit offers. Take a few minutes to
discover how to get the most in cooling comfort and economic operation from your new Air V.
Please keep this manual handy for future reference, and be sure to send in your warranty card.
ELECTRICAL DATA
You can also contact us by the internet web site, www.airv.com .
Allwiringmustcomplywithlocalandnationalelectricalcodes.Allwiringmustbeinstalledbyqualifiedelectricians.
If you have any questions about the following instructions, contact a qualified electrician.
Check the available power supply and resolve any wiring problems BEFORE installing and operating this unit.
This air conditioner is designed to operate from a 115V AC, 60Hz, 1 Phase power supply.
The wiring diagrams are located on the cover of the control box. The ceiling assembly unit wire diagrams are
located on the control box cover of ceiling panel frame.
Note the unit’s model, serial number, and the ceiling assembly serial number. Record this information on the
front cover of this manual.
Bottom View after Installation with Grille Removed
(Information of Serial Number Location)
CEILING ASSEMBLY FRAME
SERIAL NUMBER OF
CEILING UNIT
(SIDE OF CONTROL BOX)
SERIAL NUMBER
OF UPPER UNIT
BOTTOM OF
UPPER UNIT
WARNING DISCONNECT POWER SUPPLY
BEFORE REMOVE OF CONTROL PANEL.
1
2
3
4
5

OWNER’S GUIDE -
1234
1122
L
N2
N1
K1
K4K2
K6
250V 3.15A 12VDC POWER
34
MOTOR COMPRESSOR
GRN/YEL
GRN/YEL
POWER SUPPLY LINE
HIGH VOLTAGE-
FACTORY WIRING
NOTE
FIELD WIRING
FIELD WIRING
(HIGH VOLT.)
(12VDC LOW VOLT.)
FURNACE SIGNAL
RED
FUSE
BLUBLU
D1
( + )
( — )
BLK
CN1
CN2
CN3
CN6CN6CN9
CN1
CN9
DISPLAY PCB AS
ASS’Y
CONTROL PCB
POWER PCB ASS’Y
CN4CN4
BLK
BRN
Th
Th
IDC
RA
BLK
BLK
WHT
BLK WHT
BLU
1
12
1
2
3
1
2
3
1
2
3
1
2
3
4
1
12345678
12345678
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Y
2
*
*
*
3
Schematic Diagram of Ceiling Unit
And
LEGEND
IDC Th : INDOOR COIL THERMISTOR
RA Th : ROOM AIR THERmiSTOR
K : RELAY
DI : DIODE
• Standard Unit (99-00468-00, -01, -08, -09)
• Low Profile Unit (99-00468-10)
SCHEMATIC DIAGRAM of Upper Unit
PLUG CONNECTS TO CEILING UNIT.
SEE DIAGRAM SUPPLIED WITH
CEILING UNIT FOR ADDITIONAL WIRING.
# OLP : OVERLOAD PROTECTOR
# PTC : START THERMISTOR
# OLP : OVERLOAD PROTECTOR
# PTC : START THERMISTOR
# JTB : JOINT TERMINAL BLOCK
# FMC: INDOOR FAN MOTOR CAPACITOR
PLUG CONNECTS TO CEILING UNIT.
SEE DIAGRAM SUPPLIED WITH
CEILING UNIT FOR ADDITIONAL WIRING.

OWNER’S GUIDE -
햲TIMER(Orange): When the unit is in reservation on/off timer mode, an orange light will be displayed.
햳UNIT ON(Green): When the unit is switched on by the remote control or the emergency button,
a green light will be displayed.
햴FURNACE (user-optional function) EMERGENCY button: can be used when the remote control is lost or inoperative.
When the remote control is lost, damaged or the battery is discharged, the FURNACE EMERGENCY button can
be used to run the unit.
• Press the FURNACE EMERGENCY button when in the off mode condition.
- The unit operates automatically according to the room temperature in the furnace operation.
• The setting conditions of furnace emergency operation are as follows:
- Operation mode: FURNACE - Preset temperature: 73°F
- Fan Speed: OFF - Timer mode: Disable
햵COOL EMERGENCY button: also can be used when the remote control is lost or inoperative. When the remote
control is lost, damaged or the battery is discharged, the COOL EMERGENCY button can be used to run the unit.
• Press the COOL EMERGENCY button when in the off mode condition.
- The unit operates automatically according to the room temperature in the cooling operation.
• The setting conditions of cool emergency operation are as follows:
- Operation mode: COOL - Preset temperature: 75°F
- Fan Speed: AUTO - Timer mode: Disable
4
OPERATING INSTRUCTIONS
If you want to stop the emergency operation, push the EMERGENCY button again or operate
the remote control.
*TEST MODE : Installer can operate the unit anytime regardless of temperature by pushing Emergency Button
(COOL or FURNACE) more than 5 seconds continuously after installing the unit. (This function is only used by
servicemen to test the unit operation.)
* Refrigerant Compressor Time Delay : The air conditioning system is equipped with a time delay on the
compressor during the start of the cooling cycle. This time delay may be up to 3 minutes at the time of start up.
햶REMOTE CONTROL SIGNAL RECEIVER
CEILING UNIT DISPLAY
<BOTTOM VIEW>
NOTE
Room Air Thermistor

OWNER’S GUIDE - 5
Names and Functions of the Buttons
1. On/Off Button
2. Mode Selector Button
3. Fan Speed Selector Button
4. On Timer Button
5. Temperature Selector Buttons
6. Off Timer Button
1 2
MODE SELECTOR BUTTON - Press this button to
select the desired mode. In COOL mode, the unit
will run at the normal cooling mode. In DRY mode,
the microcomputer of the unit controls the fan
motor and makes the unit automatically cycle on
and off according to the room temperature. This
enables the moisture to be removed more
efficiently. In FAN mode, only the fan will operate
at the selected fan speed and circulate the room
air. In FURN. mode, the unit will run at the normal
furnace mode. (This is a user-optional function.)
ON/OFF BUTTON - If you press this button, the unit
will begin operation. (You can hear receiving
beeps twice.) Press the button again, and opera-
tion stops. (You can hear a receiving beep.) If you
press this button immediately after turning off the
unit, the compressor will not operate for 3 minutes
to prevent overloading.
3 4
ON TIMER BUTTON - When the unit is turned off,
press the ON TIMER button to select the desired
time, in hours, for the unit to turn on.
FAN SPEED SELECTOR BUTTON - Press this but-
ton to select the desired fan speed of HIGH, LOW
or AUTO in turn, and the fan will operate at the
selected fan speed. If you select “AUTO”, the fan
speed will be controlled by the microcomputer of
the unit.
REMOTE CONTROL DESCRIPTIONS
FAN
SPEED
ON/OFF
MODE
FURN.
COOL
DRY
FAN
AUTO
LOW
HIGH
TEMP.
F
C
ON
TIMER
OFF
TIMER
TIMER
OFFON

OWNER’S GUIDE -
Indicates the selected operating mode.
Lights up when the signal from the remote control is transmitted. The receiving beep is heard from the unit.
Indicated the selected temperature.
Indicates the selected or remaining time of the ON TIMER and OFF TIMER modes.
Indicates the selected fan speed.
Indicates the selected timer mode, namely, ON TIMER or OFF TIMER mode.
1
2
3
4
5
6
6
Remote Control Display
5
6
OFF TIMER BUTTON - When the unit is turned on,
press the OFF TIMER button to select the desired
time, in hours, for the unit to turn off.
TEMPERATURE SELECTOR BUTTONS - If you set
the desired room temperature, then the unit will
maintain the room temperature at the set
temperature.InCOOLmode,iftheroomtempera-
ture is higher than setting, the compressor will be
automatically turned on to provide a cooling
effect. If the room temperature is lower than the
setting, the compressor will be automatically
turned off to stop cooling operation. However,
the fan will continue to circulate air even if the
compressor is turned off.
AUTO
FURN.
ON OFF
TIMER
COOL
DRY
FAN
LOW
HIGH

OWNER’S GUIDE -7
Replacing Batteries
• Do not fit used batteries or batteries of different type. Such use may cause the unit to malfunction.
• Changing batteries should be done after turning off the unit.
• The average battery life during normal use is one year approximately.
• When the air conditioner does not operate normally after replacing the batteries, remove the batteries,
refit them and repress the RST button after 5 seconds.
NOTE
Signal Receiving
Use the remote control where its signal can reach the receiver of the air conditioner.
- You can hear the beeping sound from the unit in the remote control operation, which indicates that
the signal is received.
Remove the cover of the battery compartment at the back of the remote control by sliding it out.
Remove the old batteries and insert the new batteries. The remote control uses two alkaline batteries.
(1.5V, LR03x2)
Press the RST button with a sharp object to reset the remote control before closing the cover of the battery
compartment.
1
2
3
• The air conditioner will not operate if curtains, doors or other materials block the signals from the remote control to
the unit.
• If the infrared signal receiver on the unit is exposed to direct sunlight, the air conditioner may not work properly.
Draw the curtains to avoid direct sunlight.
• Avoid spilling liquid onto the remote control or dropping it. This can cause deformation, dislocation and malfunction.
• A mounting bracket for the remote control is supplied with the unit. Install the mounting bracket on the wall by
using two sharp point wood screws and/or double sided tape attached on the back of the bracket. This prevents
the remote control from being lost.
CAUTION
REMOTE CONTROL PREPARATION

OWNER’S GUIDE -
1
2
3
4
5
6
8
UNIT OPERATION
GENERAL OPERATION
ON/OFF button
Press button and the COOL operation is indicated.
- Receiving beeps are heard.
- The green UNIT ON lamp of the indoor unit display illuminates.
MODE button
Press this button to select the desired operation.
COOL → DRY → FAN → FURN.
FAN SPEED button
Press this button to select the desired fan speed.
HIGH → LOW → AUTO
ON TIMER button
To set the desired ON time from setting time, continue to depress and release this button.
1hr → 2hr → 3hr → 4hr → 5hr → 6hr → 7hr → 8hr → 9hr → 10hr → 11hr → 12hr → cancel
This ON TIMER can be set only in OFF mode.
TEMPERATURE ( ) buttons
Press this button to set the desired temperature. (63°F~90°F)
- To decrease the desired room temperature, keep to depress or continue to depress and release button.
- To increase the desired room temperature, keep to depress or continue to depress and release button.
OFF TIMER button
To set the desired OFF time from setting time, continue to depress and release this button.
1hr → 2hr → 3hr → 4hr → 5hr → 6hr → 7hr → 8hr → 9hr → 10hr → 11hr → 12hr → cancel
This OFF TIMER can be set only in ON mode.
PROCEDURE

OWNER’S GUIDE - 9
Moving parts can cause personal injury. Be careful when test-running the unit.
Do not operate the unit with exterior cover removed.
WARNING
BEFORE INSTALLATION
Select the temperature setting that suits your comfort needs and leave it at that chosen setting.
Keep the unit’s air filters clean. (See the Normal Maintenance Procedures section of this manual on page 19.)
During extreme outdoor temperatures, the heat gain of the vehicle may be reduced by:
- parking the vehicle in a shaded area
- keeping the windows and doors closed
- avoiding the use of heat producing appliances
- using window shades (binds and/or curtains)
For a more permanent solution to reduce the high heat gain, window awnings and/or window glass tinting
should be considered.
INSTALLATION INSTRUCTIONS
Test run the unit with proper power supply outlet. Refer to the Operating Instructions section in this Owner’s Guide.
Make sure all the controls operate correctly then disconnect the power supply of the unit.
1
2
3
Telescoping Divider # Range
71DC6A3006 (supplied) 3.25”~ 4.25”
71DC6A3005 2.0”~ 2.75”
71DC6A3007 5.0”~ 6.0”
1 2
Provided with the ceiling assembly frame is a tele-
scoping divider assembly which is used to sepa-
rate the warm return air from the cold supply air.
The telescoping divider size is determined by mea-
suring the ceiling cavity depth. (the measurement
from the ceiling to the roof)
The ceiling assembly frame must be installed over
the roof opening. The ceiling assembly frame bolts
to the bottom of the roof top unit. Compression of
the framed ceiling cavity between the roof top
unit and the ceiling assembly frame is what holds
both components in place.
CEILING ASSEMBLY FRAME INSTALLATION REQUIREMENTS
ENERGY SAVING TIPS

OWNER’S GUIDE -
3 4
The ceiling assembly frame has pin sockets ex-
tending from the front of the electrical box. This
mates with the roof top unit 115 volt electrical
conduit. When making this connection, verify that
the plugs are properly aligned and have snapped
together securely.
The 115 VAC service for the roof top unit must be
connectedinto the ceiling assembly frame. Topre-
vent wire pinching and to promote ease of
installation, allowances must be made for routing
the 115 VAC supply wiring into the front of the roof
opening.
10
Upon installation, the divider must be raised to and sealed with both the bottom of the roof top unit and the sides of
the roof opening.
IMPORTANT
The field fabricated supply ducting must attach to both sides of the ceiling assembly frame. A minimum of two
ducts are required, with one duct attached to each side of the ceiling assembly frame.
See Figures 1 and 2 for both an overhead view of the system with ducts and a ceiling assembly/ceiling cavity
installation.
Each duct must have a minimum height of 1 1/2”, maximum height cannot exceed 4 inches. Total free area
inside each duct must be no less than 10 square inches.
To decrease restriction and increase air flow, the ducting should make as few bends and turns as possible. When
corners or turns are required, we recommended that you radius the corners to keep air flow at a maximum.
Ten (10) square inches of free area per duct is the minimum requirement, larger ducting will improve air flow
and system performance.
NOTE
When ducting secures to the ceiling assembly frame, maximum width is 8 inches and maximum
height is 3 1/2”.
All field fabricated cold air supply ducting must be insulated and must have a vapor barrier.
1
2
3
4
A. Ducting
SUPPLY DUCTING AND REGISTERS

OWNER’S GUIDE -11
Insulating reduces cooling loss and helps prevent water staining of the vehicle ceiling due to moisture condensation.
IMPORTANT
Figure 1
Figure 2
Supply (cold air) registers should have a minimum discharge
area of 48 square inches per system, or 24 square inches
per duct. Figure 3 shows how to determine the discharge
area for a given register, and how to determine the num-
ber of registers required.
The register in Figure 3 provides 6 square inches of discharge
area. Each duct would require 4 registers of this size to sat-
isfy the 24”requirement.
The Additional Register Requirements are as follows:
B. Registers
1
2
Min. Max. Min. Max.
*Distance from Duct End 5”8”*Distance from End of Elbow 15”-
*Distance between Registers 24”- *Total Number Required per system 4 8
*Number Required per Duct 2 -
Figure 3

OWNER’S GUIDE -
Figure 5
The roof top air conditioner must be mounted on a level
plane from front to rear and side to side when the ve-
hicle is parked on a level plane. Figure 4 shows maxi-
mum allowable degrees that the Air V can be mounted
above or below level.
If the roof of the vehicle is sloped (not level) such that
the roof top air conditioner cannot be mounted within
the maximum allowable degree specifications, an ex-
terior leveling shim will need to be added to make the
Air V level. A typical leveling shim is shown in Figure 5.
Prepare the roof top unit for installation with the ceiling
assembly.
Install foam basepan pad at this time. See Figure 6. Pad
isprovidedwithadhesiveononesidewithreleasepaper.
12
PREPARATION AND POSITIONING THE ROOF TOP UNIT
AIR CONDITIONER DIMENSIONS (Roof Top Unit)
NOTE
1
2
3
Reach up into return air opening of the air
conditioner and pull the unit electrical cord
down for later connection.
4
Standard (Low Profile)
* Height Varies To Make Unit Level
ALLOWABLE OFFSET FOR CARRIER AIR CONDITIONERS
WITH CARRIER ROTARY COMPRESSORS
Above or Below
Level 10°Max.
Above Level 10°Max.
Below Level 0°Max.
Figure 4
Above or Below
Level 5°Max.
Above Level 5°Max.
Below Level 20°Max.
Standard Unit
Low Profile Unit
22.6"(26.8")
16.7"(24.1")
14" x 14"
OPENING
4.3"
(6.4")
4.3"
(6.4")
41"(41.7")
REAR OF
UNIT
10.3"(3.6")

OWNER’S GUIDE -
Figure 6
13
A. Preparation
1
2
CEILING ASSEMBLY FRAME PREPARATION AND MOUNTING
Secure foam topped, three-sided, telescoping divider plate (which is predetermined according to the mea-
sured thickness of the ceiling cavity, refer to p. 10) to the divider plate by tightening two screws, reference
Figure 2 of page 12. The numbers located next to the mounting holes on the telescoping divider plate refer to
the ceiling cavity depth. Install the thin seal divider pad at this time. See Figure 7. Pad is provided with adhesive
on one side with release paper.
Familiarize yourself with the high voltage wiring box, strain relief and wiring. The 115V supply wiring must be
routed through the strain relief in the high voltage wiring box and secured to wiring inside. Extend the three
high voltage wiring box leads and prepare them for attachment to the supply wiring.
A low voltage terminal strip on the front of the box connects to the 12 VDC wires.

OWNER’S GUIDE -
When inserting the ceiling assembly frame into the roof opening, be careful not to pull the foam insulation away
from the sides of the ceiling assembly. The insulation is required to create a positive air seal within the ceiling
cavity.
NOTE
B. Mounting
1
2
After having prepared the roof top unit, place it over the roof opening.
Position ceiling assembly frame into the ceiling opening. For proper orientation of the ceiling assembly frame,
reference Figure 7.
If you want to use the optional drain system for evaporator condensate, you should cut the thinner line of drain
hole as shown Figure 6-1. Install the drain adaptor with 2 screws. And a 1/2” I.D. hose must be provided that runs
from the 14” square opening, through the vehicle ceiling and down the side wall to allow water to drain under
the vehicle. The hose must not be allowed to kink shut while making a bend. Connect the top end of drain hose
to the barbed fitting shown in Figure 6-1.
NOTE Optional Drain System (for low profile unit:99-00468-10)
14
햲
Figure 6-1
햳
햴햵
HOW TO INSTALL THE DRAIN ADAPTOR (view from bottom side)

OWNER’S GUIDE -
Figure 7
Using the four bolts provided, secure the ceiling assembly frame to the roof top unit. The four mounting bolts are
to be applied up through the bottom of the ceiling assembly frame and into the bottom of the roof top unit.
Attached to the electrical circuitry of the ceiling
assembly frame is a low temperature sensor. The
low temperature sensor exits from the ceiling as-
semblyframeelectricalbox.Thefreezecircuitther-
mistor probe (See Figure 8) installs by inserting it
straight in the center area of evaporator coil, then
raising the back of the probe and continuing at a
45°angle until the probe is fully inserted.
To gain access to the fins of the evaporator coil,
reach up through the return air opening in the
bottom of the roof top unit. See Figure 8.
Mounting bolts should be tightened evenly. A rotating tightening procedure is essential for proper gasket
compression. The bolt tightening procedure is complete when the gasket under the roof top unit has been
evenly compressed to 60%.
NOTE
The sharp edges of evaporator coil may cause personal damage. Put on gloves when installing the thermistor
probe. See Figure 8.
WARNING
15
3
Figure 8
4
If your ceiling depth is thinner than 2”, you should use shorter bolts(5”long) at the front side.(2ea)
*CAUTION (for low profile)

OWNER’S GUIDE -
Routecopper,withground,supplywiringwithmini-
mum #12 AWG from its power source to the side
of the junction box. Do not attach them at this
time.
Take the roof top air conditioner electrical har-
ness and plug it into the side of the electric con-
trol box. Verify that the “ridged”side of the con-
nectors have snapped together on both sides. Do
not use excessive force when joining the
connectors. (See Figure 9)
Figure 9
WHEN USING NON-METALLIC SHEATH SUPPLY CABLES, STRIP SHEATH BACK TO EXPOSE 4-6 INCHES OF THE SUPPLY LEADS;
STRIP THE INDIVIDUAL WIRE LEAD ENDS FOR WIRE CONNECTION (ABOUT 3/4”BARE WIRE). INSERT THE SUPPLY WIRES
INTO THE STRAIN RELIEF. WIRE SHEATH MUST PROTRUDE PAST STRAIN RELIEF. MAKE SURE SHEATH CABLE IS CENTERED IN
STRAIN RELIEF BEFORE SNAPPING IT BACK INTO BOX. IF OTHER THAN NON-METALLIC CABLES ARE USED FOR SUPPLY
CONDUCTORS, APPROPRIATE STRAIN RELIEF CONNECTORS OR CLAMPS SHOULD BE USED.
THERE SHOULD BE NO CLAMPING OR PINCHING ACTION BE APPLIED TO THE INDIVIDUAL SUPPLY LEADS. (NEUTRAL
AND “HOT”WIRES)
DANGER
16
5
6
Remove the electric control box cover. (2 screws) Take the supply wire and slide it into the side of the junction
box through the strain relief that is provided.
8
Figure 10
Wire Color Descripition
Red +12VDC
Black -12VDC
Blue(2EA) Furnace option
Connect the 12 VDC lines to the black and the red wires using UL approved electrician’s tape. One supply lead
must be +12 VDC and red in color. The second supply lead must be -12 VDC and black in color. CAUTION! -
Connect red wire to +12 VDC wire, black wire to -12VDC wire. If a furnace is also to be operated, additional
wiring (2 blue wires) will need to be routed. See Figure 10.
7

OWNER’S GUIDE -
Tighten the strain relief clamp to secure the
supply wire. DO NOT OVERTIGHTEN. See Fig-
ure 12. Reinstall electric control box cover.
Figure 12
To complete the installation and system checkout requirements, the following steps must be performed.
A. Check the room air thermistor position. Make sure the room air thermistor is routed through the holding guide.
B. Refer to p.19, and remove the air filters by pulling them.
C.Secure the grille to the panel with 4 screws. At this time, take care of the position of the
room air thermistor which must be mated with the thermistor hole of the grille.
D. Reinstall the air filters.
E. Turn on the power supply to the roof top air conditioner.
Connect the power line to the black, white and
groundwires found in the junction boxusing three
wire connectors. CAUTION - Connect black wire
toblack wire, white wire to white wireand ground
wire to ground wire. (green to bare copper) Us-
ing UL approved electrician’s tape, secure the
wire connectors in a workmanlike manner. See
Figure 11.
Figure 11
9
10
COMPLETING THE INSTALLATION
17

OWNER’S GUIDE -
TROUBLESHOOTING
If you have problems with your recreational vehicle air conditioner unit, check this guide before contacting your
service representative.
TROUBLE POSSIBLE CAUSES SOLUTION
UNIT DOES
NOT OPERATE
Check the power supply of the vehicle
and make sure it is provided correctly.
Make sure that there are no obstacles
restricting or blocking the unit’s output.
Mount the roof top air conditioner as
level as possible from front to rear and
side to side when the vehicle is parked.
Make sure that the mounting of the air
conditioner is correct and level.
Reset the Air V to a lower temperature
setting.
Remove and clean the filters.
Allow a sufficient amount of time for unit
to cool the room.
These noises are normal during the
operation of the unit.
Cancel OFF timer function.
Normal operation.
Mounting bolts should be tightened
evenly by compressing the basepan
gasket to the sixty percent requirement.
Remove and clean the filter.
Contact the servicemen.
THE UNIT IS NOT
COOLING THE
ROOM
THE UNIT
STOPS DURING
OPERATION
THE UNIT HAS
WATER DRIPPING
INSIDE
THE UNIT HAS
ICE OR FROST
ON COIL
THE UNIT ON
LAMP FLICKERS
The unit may not be connected to the power
supply correctly.
There could be blockage of unit’s air output.
The roof top air conditioner is not level.
The temperature setting is too high.
The air filter is dirty.
The room was already very hot before the unit
was turned on.
The unit is clicking and gurgling.
The OFF TIMER is operating
The room temperature has
reached the setting temperature.
The basepan gasket has not been evenly
compressed to about 60%.
The filter is dirty.
The malfunction of the sensors
or compressor is detected.
THE UNIT IS
MAKING NOISES
18

OWNER’S GUIDE -
NORMAL MAINTENANCE PROCEDURES
Remove cover and wash the condenser coil
Remove cover and clean the water drains
Clean the filters*
*Generally, filters should be cleaned every 30 days.
The filters are very efficient in removing airborne
particles.
More frequent cleaning may be necessary
depending on the air quality.
Remove the air filters by drawing slightly down and
pulling them as illuatrated righthand.
Wash away dust from the air filters with clean water
or vacuum the filters with an electric household
vacuum cleaner.
ACTIVITY FREQUENCY
Twice a year
Yearly
Once a month
19
How to Remove the Filters:
How to Clean the Air Filters:
FAILURE TO FOLLOWING INSTRUCTIONS COULD RESULT IN SERIOUS PERSONAL INJURY
• Don’t touch the capacitor terminals without the electric discharge. The capacitor still may have the
high voltage even though the power supply is turned off.
• Be careful when you dispose the refrigerant cycle, which has the high internal pressure.
WARNING