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KE18NB4U Owner's Manual - Page 5
... COMPONENTS
10-1. Checklist before Servicing 63 11-3. Tools Specifically for R410A 64 11-4. Tubing Installation Procedures 64 11-5. Retro-Fitting Existing Systems 68 APPENDIX A Operating Instructions A-1
(CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU-KE18NKU)
APPENDIX B INSTALLATION INSTRUCTIONS A-2
(CS-KE12NB41 & CZ-18BT1U + CU-KE12NK1 CS-KE18NB4UW & CZ-18BT1U + CU...
KE18NB4U Owner's Manual - Page 17
Other Component Specifications
Resistance (k ohm) Resistance (k ohm)
Indoor Unit Outdoor Unit
CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U CU-KE12NK1 CU-KE18NKU
• Indoor air temp sensor (Model:KTEC-35-S98)
10
9
8
7
6
5
4
3
2
1
0
50 59 68 77 86 95 104
(10) (15) (20) (25) (30) (35) (40)
Temperature °F (°C)
• Indoor heat exchanger sensor (Model:PT2M...
KE18NB4U Owner's Manual - Page 18
...ceiling (21/32" or more below the lower surface of the main unit), as shown in the figure at right. DIMENSIONAL DATA
Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
Unit : inch (mm) 18
A
23-5/8 (600) Ceiling opening dimensions
21-1/32 (534) Suspension bolt pitch
1 ... so that there is too long, it will contact the ceiling panel and the unit cannot be installed.
3-1/8 21/32 1-3/16
KE18NB4U Owner's Manual - Page 35
6-2. Electric Wiring Diagrams
Indoor Unit CS-KE12NB41 & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U
35
TO OUTDOOR UNIT
1 2 3 TERMINAL BASE
GND
FAN MOTOR
FM
DRAIN PUMP
DP
FERRITE CORE
BLK WHT RED RED BLK WHT YEL ...
KE18NB4U Owner's Manual - Page 51
TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
9-1.... the indoor circuit board, or a ROM socket insertion problem, or the ROM has not been installed.
2: The failure mode is stored in combinations of ... any trouble with the most recent report. High-capacity electrolytic capacitors are displayed, for the charge to be any electrified parts before Performing Inspection or Repair
After checking...
KE18NB4U Owner's Manual - Page 52
...(HEAT PUMP MODEL ONLY)
TROUBLE ZERO-CROSS TROUBLE
(2) O/D PCB FAILURE
GAS-LOSS PREVENTION
(1) SERVICE VALVE NOT OPENED (2) INSUFFICIENT GAS
DC COMPRESSOR DRIVE CIRCUIT TROUBLE
(1) OPEN PHASE...OFF
....
ON
OPERATION TIMER
HIGH POWER
CODE DIAGNOSIS CONTENTS
POSSIBLE MALFUNCTION
S01 S02
ROOM TEMP. INDICATION ON INDOOR UNIT
.... SENSOR TROUBLE
(1) OPEN OR SHORT CIRCUIT IN SENSOR...
KE18NB4U - Operation Manual - Page 2
... controller's S/M switch is at the "M" (Multiple) position. (Refer to "USING THE REMOTE CONTROLLER" on page 8.)
Before operating the unit, read these operating instructions thoroughly and keep them for the model CS-KE18NB4UW only.
• "Single use" means that only one indoor unit is connected with one outdoor unit in a one -unit configuration and...
KE18NB4U - Operation Manual - Page 3
... OPERATION WITHOUT THE REMOTE CONTROLLER..........14 CARE AND CLEANING 14 TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) ..16 OPERATING RANGE 16 WIRED REMOTE CONTROLLER 16 SPECIFICATIONS 17
PRODUCT INFORMATION
If you have problems or questions concerning your Air Conditioner, you will need the following symbols used in this manual, alert you to potentially dangerous conditions to users...
KE18NB4U - Operation Manual - Page 4
... service dealer for its intended purpose as a greenhouse.
• Do not install the air conditioner where excessively high heat-generating objects are designed to the local electrical codes. This is dangerous because the fan is very dangerous. • Do not use for help .
• FCC Caution: To assure continued compliance, follow the attached installation instructions...
KE18NB4U - Operation Manual - Page 5
...PARTS...room is indicated by the changing color of a standard model.
IMPORTANT
Avoid using radio equipment such as mobile phone near...OFF, operation mode selection, temperature, fan speed, timer setting, and air sweeping.
Consequently, the shape may cause malfunction... button enables heating and cooling operation.
If the trouble happens, disconnect power and restart the air conditioner ...
KE18NB4U - Operation Manual - Page 11
..., press HIGH POWER button again.
10 3. STEP 2 Press the ON/OFF operation button.
Automatic fan speed Simply set the FAN SPEED selector button to adjust fan speed manually during operation, just set the FAN SPEED selector button as desired. [ ,
, or ]
4. This automatically sets the best fan speed for all operation modes except automatic operation...
KE18NB4U - Operation Manual - Page 15
...edges and the fins are set to the room temperature minus...parts.
• The internal coil and other components of the outdoor unit must be carried out by the changing color of the OPERATION lamp. CARE AND CLEANING
• Cleaning and maintenance operations must be cleaned every year.
be sure to let it has trouble...that suits your dealer or service center.
Consult your preference ...
KE18NB4U - Operation Manual - Page 17
... room.
2.
Doors and/or
3. Remove it still does not work properly, first check the following points before requesting service. Trouble
Air conditioner does not run down. Line voltage is set too high for cooling (or too low for heating.)
6. (Consult your dealer or try to use the wired remote control function, you wish...
KE18NB4U - Installation Manual - Page 3
... to prevent "sweating" that is an important part of Improper Installation
The manufacturer shall in this instruction booklet before beginning.
Follow each installation or repair step exactly as this manual. It may be responsible for easy maintenance.
...In a Ceiling or Wall
Make sure the ceiling/wall is rigid and strong enough to support or hold the unit's weight.
KE18NB4U - Installation Manual - Page 6
... Refrigerant
(oz./ft.)*
CS-KE12NB41
25
65
23
0.16
CS-KE18NB4UW
25
100
50...Service Manual.
5 For more than 10 ft. (3 m). Insulated staples or clamps for Installation
1.
Putty 4. CAUTION
Air delivery will hold the weight of flammable gas may affect operation.
Table 3
Model... Required for connecting wire
(See local codes) 3. Refrigeration lubricant 5. Clamps or ...
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