Midea MSG-12CRN1N, MSG-18CRN1N, MSG-24CRN1N user guide manual

Service Instructions
Split System Wall Mounted Air Conditioners and Heat Pumps with R-410A Refrigerant
This manual is to be used by qualified, professionally trained HVAC technicians only.
to improper service procedures or services performed by an unqualified person.
Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500
Houston, TX 77056
www.goodmanmfg.com
Copyright © 2007 Goodman Manufacturing Company, L.P.
RS6100005
October 2007
TABLE OF CONTENTS
IMPORTANT INFORMATION .........................2 - 3
PRODUCT FEATURES ..................................... 4
PRODUCT DESIGN ......................................6 - 7
SPECIFICATIONS .......................................8 - 10
REMOTE CONTROL .................................12 - 13
SERVICE ....................................................14 - 19
TROUBLESHOOTING................................20 - 26
WIRING DIAGRAMS ...................................27 - 30
SYSTEM OPERATION ..................................... 11
IMPORTANT INFORMATION
Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE
SERVICE MANUAL BEFORE BEGINNING REPAIRS.
IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS
WARNING
This unit should not be connected to, or used in conjunction with, any devices that are not design certified for use with this unit or have not been tested and approved by Goodman. Serious property damage or personal injury, reduced unit performance and/or hazardous conditions may result from the use of devices that have not been approved or certified by Goodman.
WARNING
To prevent the risk of property damage, personal injury, or death, do not store combustible materials or use gasoline or other flammable liquids or vapors in the vicinity of this appliance.
WARNING
Good ma n will not be respo nsible for any injury or prop erty dam age arising from imprope r service or service procedures. If you perform service on your own product, you assume responsibility for any personal injury or property dam age wh ich may result.
To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact:
CONSUMER INFORMA TION LINE GOODMAN® BRAND PRODUCTS
TOLL FREE 1-877-254-4729 (U.S. only)
email us at: customerservice@goodmanmfg.com
fax us at: (713) 856-1821
(Not a technical assistance line for dealers.)
Outside the U.S., call 1-713-861-2500. (Not a technical assistance line for dealers.) Your telephone company will bill you for the call.
2
Outside the U.S., call 1-931-433-6101. (Not a technical assistance line for dealers.) Your telephone company will bill you for the call.
IMPORTANT INFORMATION
SAFE REFRIGERANT HANDLING
While these items will not cover every conceivable situation, they should serve as a useful guide.
WARNING
Refrige rants are heavier than air. They can "push out" the oxygen in your lungs or in any enclosed space.To avoid possible difficulty in breathing or death:
Never purge refrigerant into an enclosed room or
space. By law, all refrigerants must be reclaimed.
If an in door leak is suspec ted, th oro ughl y vent ilat e
th e ar ea b ef ore b egi nn i ng w or k.
• Liqui d ref ri ge ra nt can be ver y co l d. To av oi d pos si ble frostbit e or blind ness , avoi d co ntac t wi th re fri geran t and wear gloves and goggles. If li quid refrigerant does cont act your skin or eyes , s eek medi ca l hel p immediate ly.
• Always follow EPA regulations. Never burn refrig­ erant, as poisonous gas will be produced.
WARNING
To avoid possible explosion, use only returnable (not disposable) service cylinders when removing refrig­erant f rom a system.
• Ensure the cylinder is free of damage which could lead to a leak or explosion.
• Ensure the hydrostatic test date does not exceed 5 years.
WARNING
To avoid possible injury, explosion or death, practice safe handling of refrigerants.
• Ensure the pressure rating meets or exceeds 400 lbs.
When in doubt, do not use cylinder.
WARNING
System contam inants, improper se rvice procedure and/or physical abuse affecting hermetic com pressor electrical terminals may cause dangerous s ystem venting.
The successful development of hermetically sealed refrigera­tion compressors has completely sealed the compressor's moving parts and electric motor inside a common housing, minimizing refrigerant leaks and the hazards sometimes associated with moving belts, pulleys or couplings.
Fundamental to the design of hermetic compressors is a method whereby electrical current is transmitted to the compressor motor through terminal conductors which pass through the compressor housing wall. These terminals are sealed in a dielectric material which insulates them from the housing and maintains the pressure tight integrity of the hermetic compressor. The terminals and their dielectric embedment are strongly constructed, but are vulnerable to careless compressor installation or maintenance proce­dures and equally vulnerable to internal electrical short circuits caused by excessive system contaminants.
In either of these instances, an electrical short between the terminal and the compressor housing may result in the loss of integrity between the terminal and its dielectric embed­ment. This loss may cause the terminals to be expelled, thereby venting the vaporous and liquid contents of the compressor housing and system.
A venting compressor terminal normally presents no danger to anyone, providing the terminal protective cover is properly in place.
If, however, the terminal protective cover is not properly in place, a venting terminal may discharge a combination of
(a ) hot lubricating oil and refrigerant (b ) flammable mixture (if system is contaminated
with air)
in a stream of spray which may be dangerous to anyone in the vicinity. Death or serious bodily injury could occur.
Under no circumstances is a hermetic compressor to be electrically energized and/or operated without having the terminal protective cover properly in place.
3
IMPORTANT INFORMATION
Please read and follow the important notes below.
Installation:
1. Always use the correct size circuit breaker and fuse. Circuit breakers should be installed on a dedicated circuit.
2. Properly ground the unit.
3. Do NOT use extension cords.
4. Ensure that the unit is mounted on a stable instal­lation stand. Check periodically for signs of deterio­ration.
5. Running the unit for long periods of time during high humidity or with windows/doors open may cause condensation on furnishings.
6. The power cable should not be stretched and noth­ing should sit on it. Always turn the unit off before plugging or unplugging the power cable.
7. Make sure proper ventilation of conditioned space is provided.
8. Protect unit before arrival of inclement weather.
9. Do not open the inlet grill during operation of the unit.
10.Do not touch the electrostatic filter if unit is equipped with one.
11. If smoke or unusual noises emit from the unit, immediately turn off the unit and disconnect ALL power. (See warning above.)
12.Do not allow water to enter the unit. In the instance that the unit is soaked or submerged, contact an authorized servicer.
13.When the unit is not used for a long period of time, disconnect ALL power to the unit.
14.Place the outdoor unit in a location away from high traffic areas to prevent tripping or damage to the unit. Do not place objects on the unit.
Hazards or unsafe practices result in property damage, product damage, personal injury or death.
1. Always check for refrigerant leakage after installa­tion or repair of the product.
2. Drain hose must be installed properly so water will drain away from the unit.
3. Installing the unit in an unlevel position may cause vibration or water leakage.
4. Install the outdoor unit away from vegetation as the hot air may cause damage to vegetation in close proximity.
5. To avoid personal injury, always use two people to lift or transport the unit.
6. Unit should not be installed where it may be exposed directly to sea coast conditions (sea wind or salt spray).
Operation:
1. Do not block the inlet or outlet of airflow.
2. Do not use harsh detergents, solvents, etc., to clean the unit. A soft cloth is recommended.
3. Use caution when removing the air filter, as there may be sharp, metal edges.
4. Clean the filter every two weeks or more often, if neces­sary and be sure to seat the filter securely.
5. Keep hands and foreign objects away from the air outlets while the unit is in operation.
may
4
PRODUCT FEA TURES
Indoor unit:
1. ON/OFF operation by remote control.
2. Room temperature sensing.
3. Room temperature control.
4. Starting temperature control. 5 second delay of indoor fan at start.
5. Time delay safety control. Approximate restart time: 3 minutes.
6. Indoor fan speed control. High, medium, low & breeze.
7. Operation indication lamps. (LED display for each mode)
8. 2-direction air vane. Louver direction is decided by unit according to operation mode.
9. Sleep mode auto control. Fan is on low speed (cooling/ heating) and will turn off after 7 hours.
10. Independent dehumidification. Used primarily for high humidity conditions/damp areas.
11. Self-diagnosing function. Functions in any operational mode.
12. Air flow directional control. Louver can be manually set at desired position or set to automatically swing up or down.
13. Auto mode. Unit automatically adjusts to room tempera- ture.
14. Anti-cold function. Prevents the cold air burst at the beginning of the unit start up.
15. Temperature compensation.
16. Defrost mode.
17. Auto-restart.
18. Flexible wiring connection.
19. Easy-clean panel.
20. Turbo (12k models). In cooling mode, the unit will reach the pre-set temperature in the shortest time.
Outdoor unit:
1. Power relay control The unit has a 3 minute delay between continuously ON/OFF operations.
2. Low noise airflow system. Bird tail propeller fan makes the outdoor unit run more quietly.
3. Hydrophilic aluminum fin. Applies to cooling & heating modes only. The fin improves the heating efficiency at operation mode.
4. Reversing Valve. Operates only in the heating opera­tion mode, except defrosting operation.
5. Anti-rust cabinet. Crafted from electrolytic zinc steel sheet metal and anti-rust coated components.
6. Valve protection cover. Cover protects the valves and prevents water from dripping.
5
PRODUCT DESIGN
DIMENSIONS - INDOOR UNIT
Model Indoor Unit
MSG-12CRN1N MSG-18CRN1N MSG-24CRN1N
Dimensions - W x D x H
Inches
35-11/16 x 9-3/8 x 11-1/4 906 x 235 x 286 49-1/4 x 9-1/16 x 12-13/16 1250 x 230 x 325 49-1/4 x 9-1/16 x 12-13/16 1250 x 230 x 325
Dimensions in inches & mm
Dimensions - W x D x H
mm
6
PRODUCT DESIGN
DIMENSIONS - OUTDOOR UNIT
Model Outdoor Unit
MSG-12HRN1W MSG-18HRN1W MSG-24HRN1W
Dimensions
W x D x H - Inches
29-15/16 x 11-1/4 x 23-1/4 20-7/8 (530) 11-3/8 (290)
33-1/4 x 13-3/16 x 27-3/8 22 (560) 13-3/16 (335)
35-5/16 x 13 x 33-7/8 23-1/4 (590) 13-1/8 (333)
Dimensions in inches / mm
L1
Inches (mm)L2Inches (mm)
7
SPECIFICATIONS
MSG-12CRN1 MSG-12HRN1 Power Supply - Ph/V/Hz Cooling
Capacity, Btu/H 12,000 12,000 Input, watts 1,050 1,050 Rated current - amps 4.6 4.6 SEER - Btu/w.h 13.0 13.0
Heating
Capacity, Btu/h 13,000 13,000 Input, watts 1,050 1,050 Rated Current - amps 4.6 4.6 HSPF - W/W 7.7 7.7
Max. Current - amps Starting Current - amps Compressor
Model PA108X1C-3FZDU PA108X1C-3FZDU Type Rotary Rotary Brand Toshiba Toshiba Capacity - Btu/h 10,850 / 1,100 10,850 / 1,100 Input, watts 1,070 / 1,075 1,070 / 1,075 Rated current (RLA) - amps 5.2 / 4.8 5.2 / 4. 8 Locked rotor (LRA) - amps 21 / 23.5 21 / 23.5 Thermal protector B185-135-141E B185-135-141E Capacitor - μF35 Refrigerant oil - oz. / ml 12 oz. / 350 ml 12 oz. / 350 ml
Indoor Fan Motor
Model WZDK25-38D WZDK25-38D Brand Welling Welling Input, watts 32 32 Capacitor - μF Speed RPM/minute (High, Med, Low) 1,270 / 1,100 / 1,000 1,270 / 1,100 / 1,000
Indoor air flow - CFM (High, Med, Low) Indoor air flow - (High, Med, Low) / m3/h 750 / 620 / 550 750 / 620 / 550 Indoor noise level - dB(A) (High, Med, Low) Outdoor Fan Motor
Model YDK36-6B YDK36-6B Brand Welling Welling Input, watts 85 85 Capacitor - μF2.5μF/450V 2.5μF/450V Speed RPM/Mi nu te 930 930
Outdoor air flow - CFM Outdoor air flow - m Outdoor noise level - dB(A) Refrigerant type R410A - Oz. / g 48 oz. / 1350 g 48 oz. / 1350 g Design pressure - PSI / 'MPa Refrigerant Piping
Liquid side / gas side (Inches / mm) Max. refrigerant pipe length (feet / m) 33' / 10 m 33' / 10 m Max. difference in level (feet / m) 16' / 5 m 16' / 5 m
Operation temp. - (°F) / (°C) Ambient temp. - (°F) / (°C) Approximate Application area - Sq. ft. / m
3
/h
2
1, 208/230V/60Hz 1, 208/230V/60Hz
7.6 7.6
21 / 23.5 21 / 23.5
μ
f / 450 VAC 35μf / 450 VAC
---- ----
441 / 365 / 325 441 / 365 / 325
45 / 41 / 38 45 / 41 / 38
1,118 1,118 1,900 1,900
55 55
653 / 4.5 653 / 4.5
1/4" / 1/2" - Φ6.35 / Φ12.7 1/4" / 1/2" - Φ6.35 / Φ12.7
63°F - 86°F / 17°C - 30°C 63°F - 86°F / 17°C - 30°C
19°F - 113°F / -7°C - 45°C 19°F - 113°F / -7°C - 45°C
194 - 280 / 18 -- 26 194 - 280 / 18 -- 26
MSG-12*
NOTE: The noise data is based on hemi-anechoic chamber, during actual operation. Because of ambient conditions, these values may be
somewhat different than shown. Specifications are subject to change without prior notice.
8
SPECIFICATIONS
3
MSG-18CRN1 MSG-18HRN1 Power Supply - Ph/V/Hz Cooling
Capacity, Btu/H 18,000 18,000 Input, watts 1,560 1,530 Rated current - amps 6.8 6.7 SEER - Btu/w.h 13.0 13.0
Heating
Capacity, Bt u/h --- 18,000 Input, watts --- 1,630 Rated Current - amps --- 7.1 HSPF - W/W --- 7.7
Max. Current - amps Starting Current - amps 32.6 32.6 Compressor
Model PA150X2CS-3KUU PA150X2CS-3KUU Type Rotary Rotary Brand Toshiba Toshiba Capacity - Btu/h 15,166 / 15,354 15,166 / 15,354 Input, watts 1,505 / 1,510 1,505 / 1,510 Rated current (RLA) - amps 7.30 / 6.65 7.30 / 6.65 Locked rotor (LRA) - amps 32.6 32.6 Thermal protector UP3RE0391-T39 UP3RE0391-T39 Capacitor - μF40 Refrigerant oil - oz. / ml 25 oz. / 750 ml 25 oz. / 750 ml
Indoor Fan Motor
Model YDK31-6B YDK31-6B Brand Welling Welling Input, watts 55 55 Capacitor - μF Speed RPM/minute (High, Med, Low) 1,070 / 1,000 / 960 1,070 / 1,000 / 960
Indoor air flow - CFM (High, Med, Low) Indoor air flow - (High, Med, Low) / m3/h 1050 / 920 / 830 1050 / 920 / 830 Indoor noise level - dB(A) (High, Med, Low) 45 / 43 / 41 45 / 43 / 41 Outdoor Fan Motor
Model YDK53-6KB YDK53-6KB Brand Welling Welling Input, watts 165 165 Capacitor - μF3 Speed RPM/Minut e 840 840
Outdoor air flow - CFM Outdoor air flow - m Outdoor noise level - dB(A) 59 59 Refrigerant type R410A - Oz. / g Design pressure - PSI / 'MPa Refrigerant Piping
Liquid side / gas side (Inches / mm) Max. refrigerant pipe length (feet / m) 33' / 10 m 33' / 10 m Max. difference in level (feet / m) 16' / 5 m 16' / 5 m
Operation temp. - (°F) / (°C) 63°F - 86°F / 17°C - 30°C 63 °F - 86°F / 17°C - 30°C Ambient temp. - (°F) / (°C) Approximate Application area - Sq. ft. / m
/h
2
1, 208/230V/60Hz 1, 208/230V/60Hz
9.2 10.2
μ
F / 450 VAC 40 μF / 450 VAC
33
618 / 541 / 489 618 / 541 / 489
μ
F/450V 3μF/450V
1,471 1,471 2,500 2,500
71 oz. / 2000 g 71 oz. / 2040 g
653 / 4.5 653 / 4.5
1/4" / 1/2" - Φ6.35 / Φ12.7 1/4" / 1/2" - Φ6.35 / Φ12.7
64°F - 113°F / 18°C - 45°C 19°F - 113°F / -7°C - 45°C
323 - 431 / 40 - 30 323 - 431 / 30 - 40
MSG-18*
NOTE: The noise data is based on hemi-anechoic chamber, during actual operation. Because of ambient conditions, these values may be
somewhat different than shown. Specifications are subject to change without prior notice.
9
SPECIFICATIONS
3
2
MSG-24CRN1 MSG-24HRN1 Power Supply - Ph/V/Hz Cooling
Capacity, Bt u/H 24, 000 24,000 Input, watts 2,000 2,000 Rated current - amps 8.8 8.8 SEER - Btu/w.h 13.0 13.0
Heating
Capacity, Bt u/h --- 24,000 Input, watts --- 2,000 Rated Current - amps --- 8.8 HSPF - W/W --- 7.7
Max. Current - amps 14 14 Starting Current - amps Compressor
Model PA200X2CS-3MKUU PA200X2CS-3MKUU Type Rotary Rotary Brand Toshiba Toshiba Capacity - Btu/h Input, watts Rated current (RLA) - amps Locked rotor (LRA) - amps 34.8 34.8 Thermal protector UP3SE0 39 6-T39 UP3SE0396-T39 Capacitor - μF50 Refrigerant oil - oz. / ml 25 oz. / 750 ml 25 oz. / 750 ml
Indoor Fan Motor
Model YDK50-4B YDK50-4B Brand Welling Welling Input, watts 82 / 69 / 58 82 / 69 / 58 Capacitor - μF Speed RPM/minute (High, Med, Low) 1,260 / 1,100 / 990 1,260 / 1,100 / 990
Indoor air flow - CFM (High, Med, Low) Indoor air flow - (High, Med, Low) / m3/h 1150 / 1020 / 930 1150 / 1020 / 930 Indoor noise level - dB(A) (High, Med, Low) Outdoor Fan Motor
Model YDK100-6EB YDK100-6EB Brand Welling Welling Input, watts 160 160 Capacitor - μF4 Speed RPM/Minute 740 740
Outdoor air flow - CFM Outdoor air flow - m Outdoor noise level - dB(A) 59 59 Refrigerant type R410A - Oz. / g Design pressure - PSI / 'MPa 653 / 4.5 653 / 4.5 Refrigerant Piping
Liquid side / gas side (Inches / mm) Max. refrigerant pipe length (feet / m) 33' / 10 m 33' / 10 m Max. difference in level (feet / m) 16' / 5 m 16' / 5 m
Operation temp. - (°F) / (°C) 63°F - 86°F / 17°C - 30°C 63°F - 86°F / 17°C - 30°C Ambient temp. - (°F) / (°C) Approximate Application area - Sq. ft. / m
/h
1, 208/230V/60Hz 1, 208/230V/60Hz
34.8 34.8
19820 / 20130 +
2000 / 1980 +
9.70 / 8.75 +
μ
f / 450V 50μf / 450V
677 / 600 / 581 677 / 600 / 581
47 / 44 / 42 47 / 44 / 42
μ
f / 450V 4μf / 450V
1,471 1,471 2,500 2,500
85 oz. / 2400 g 86 oz. / 2450 g
3/8" / 5/8" - Φ9.53 / Φ16 3/8" / 5/8" - Φ9.53 / Φ16
64°F - 113°F / 18°C - 45°C 19°F - 113°F / -7°C - 45°C
431 - 603 / 40 - 56 431 - 603 / 40 - 56
5% 19820 / 20130 + 5%
5% 2000 / 1980 + 5%
5% 9.70 / 8.75 + 5%
33
MSG-24*
NOTE: The noise data is based on hemi-anechoic chamber, during actual operation. Because of ambient conditions, these values may be
somewhat different than shown. Specifications are subject to change without prior notice.
10
SYSTEM OPERA TION
REFRIGERANT CYCLE
Cooling only
Heat pump mode
(INDOOR COIL)
OPERATION LIMITS
CAPILLARY TUBE
(OUTDOOR
Cooling operation
All units may operate in the cooling mode up to a maximum outdoor ambient temperature of 111°F (44°C), and down to a minimum outdoor ambient temperature of 66°F (19°C). The indoor side may be operated in the cooling mode with indoor ambient temperature between 52°F and 88°F (11°C and 31°C).
Heating operation
Heat pump units may operate in the heating mode up to a maximum outdoor ambient temperature of 77°F (25°C), and down to a minimum outdoor ambient temperature of 16°F (-9°C). The indoor side may be operated in the heating mode with indoor ambient temperature between 59°F and 86°F (15°C and 30°C).
11
REMOTE CONTROL
OPERATION OF THE REMOTE CONTROL
Performance Features
1. Operating modes: AUTO, COOL, DRY, HEAT (heat pump only model) and FAN.
2. Timer Setting Functions - 24 hours.
3. Indoor temperature setting range: 62°F - 88°F (17°C - 31°C).
4. Full function LCD display.
O
Remote Control Features
1. TEMP ButtonT: Decreases the indoor temperature setting.
2. TEMP ButtonS: Increases the indoor temperature set­ting.
3. MODE Selection Button: Each time the button is pressed, the operation mode is shifted in the direction of the arrow:
 AUTO  COOL  DRY  HEAT  FAN

----
--------
 --------
 --------
 --------
 ----------
horizontal swing louvers move back and forth continu­ously, until the button is pressed again. (This function
is not available on all units.)
7. LED DISPLAY Button: Pressing this button will clear the digital display. A second press will illuminate the display. (This function not available on units without LED display window.)
8. FAN SPEED Button: This button changes the FAN SPEED in four steps: AUTO, LOW, MED or HIGH. Each time the button is pressed, the fan speed mode is shifted.
9. ON/OFF Button: Turns the unit off and on.
10. TIMER ON Button: Initiates the auto-on time sequence. With each press, the auto-timed setting will be increased in 30 second increments. When the setting time displays 10:00, each press will increase the auto-timed setting in 60 minute increments. To cancel the auto-timed pro­gram, adjust the auto-on time to 0:00.
11. SLEEP Button: Press this button to activate the Energy- Saving operation mode. Pressing it again will cancel this mode. This function can only be used on COOL, HEAT and AUTO modes and will automatically maintain the most comfortable temperature for you.
NOTE: Pressing any button when the unit is in SLEEP mode will cancel this setting.
12. TIMER OFF Button: This button initiates the auto-off time sequence. With each press, the auto-timed setting will be increased in 30 second increments. When the setting time displays 10:00, each press will increase the auto-timed setting in 60 minute increments. To cancel the auto-timed program, adjust the auto-off time to 0:00.
13. LOCK Button: The recessed LOCK button locks in all the current settings and the remote control does not accept any operation except the LOCK. To cancel the LOCK mode, press the button again.
14. TURBO Button: When this button is pushed during COOL mode, the air conditioner turns on high speed fan. To cancel TURBO function, press the TURBO button again. (Not available for all models.)
Display Panel Features
1
2 4
7
3 4
4. SWING Button: Changes the louver angle.
5. RESET Button: The recessed RESET button cancels all current settings and returns the control to the initial settings.
6. AIR DIRECTION Button: Pressing and releasing this button quickly changes the direction of the horizontal swing louvers. Pressing this button for more than 2 seconds activates the Auto Swing feature, where the
12
5
6
REMOTE CONTROL
1. DIGITAL DISPLAY Area: This area will show the set temperature and, if in the TIMER mode, will show the ON and OFF settings of the TIMER. If in the FAN mode, nothing will be visible on the display.
2. TRANSMISSION Indicator: When the remote control transmits signals to the indoor unit, this indicator will flash one time.
3. ON/OFF Indicator: This symbol appears when the unit is turned on by the remote control and disappears when the unit is turned off.
4. OPERATION MODE Indicator: To show the current operating mode -- AUTO, COOL, DRY or HEAT (heat pump only model) or FAN mode.
5. LOCK Indicator: LOCK display is accomplished by pushing this button. Push the LOCK button again to unlock.
6. TIMER DISPLAY Indicator: Shows the settings of the TIMER. If only the starting time of the operation is set, the indicator will display TIMER ON. TIMER OFF is visible if the time is set for the unit to turn off. If both operations are set, TIMER ON-OFF will be visible and the unit will automatically turn ON and turn OFF.
7. FAN SPEED Indicator: Press the FAN SPEED button to select the desired fan speed setting (AUTO, LOW, MED, HIGH). Your selection will be display in the LCD window. (Auto fan speed is not displayed.)
NOTE: For purposes of demonstration only, all settings are shown on the Display Panel figure. During actual operation, only the relevant, functional displays are shown on the panel.
Operating the Remote Control Installing and Replacing Batteries
The Remote Control requires two (2) AAA alkaline dry batteries.
1. Slide the back cover of the battery compartment and install the batteries according to the direction (+) and (-) as shown.
2. To replace old batteries, use the same procedure as in Step 1 above.
NOTE:
1. Do not use old or a different type battery in the Remote Control as this may cause the control to malfunction.
2. Remove the batteries if you do not use the remote control for extended periods, since battery leakage may damage the remote control.
If batteries show signs of leakage, be careful not to get the liquid on your skin or clothes. In that event, wash well with clean water. Do not use the remote control if the batteries have leaked into it.
Dispose of batteries properly.
3. The average battery life under normal use conditions is approximately 6 months.
4. Replace the batteries if there is no answering beep from the indoor unit or the Transmission Indicator light fails to light.
Automatic Operation
Turn the power ON. The OPERATION indication lamp on the display panel of the indoor unit will flash 6 times and then automatically turn itself off.
1. Use the MODE button to select AUTO.
2. Push the TEMP button to set the desired room tempera­ture. The most comfortable settings are between 70°F and 82°F (21°C - 28°C).
3. Push the ON/OFF button to start the air conditioner. The OPERATION lamp on the display panel of the indoor unit will light. The FAN SPEED will automatically be set so there will be no fan speed indicators shown on the display panel.
4. Push the ON/OFF button again to stop the unit's opera­tion.
NOTE:
1. In the AUTO mode, the air conditioner will logically choose the mode of COOL, FAN or HEAT by sensing the difference between the actual ambient room temperature and the set temperature on the remote control.
2. Manual selection can be made if the AUTO mode does not maintain a comfortable temperature.
COOL/HEAT (heat pump only model) and FAN Operation
1. Manually override the AUTO mode by using COOL, HEAT or FAN modes if the AUTO mode does not maintain a comfortable temperature.
2. Push the TEMP button to set the desired room tempera­ture. When in COOLING mode, the most comfortable settings are 70°F (21°C) or above. When in HEATING mode, the most comfortable settings are 82°F (28°C) or below.
3. To select the FAN mode of AUTO, HIGH, MED or LOW, press the FAN SPEED button.
4. Press the ON/OFF button. The operation lamp lights and the air conditioner starts to operate at your desired setting. Press the ON/OFF button again to stop the unit's operation.
13
SERVICE
Torque Wrench Requirements for installation
Outside Diameter
Torque Torque
mm Inch Lbs. per ft. Kg.m
ϕ6.35
ϕ9.52 ϕ12.70 ϕ15.88 ϕ19.05
1/4 13 1.8 3/8 30 4.2 1/2 40 5.5 5/8 48 6.6 3/4 48 6.6
Cable Connection
The power cord or cable connection
should be selected according to this
specification table.
Pipe Length & Elevation Requirements
Capacity
Pipe Size
Vapor Liquid with Unit Elevation Overall of Additional Line
Line Set Length Max. Additional Refrigerant
Provided Length Per foot
mm
AWG
Unit Size
12 18 24
2
1.0 1.5 2.5 14 14 12
Max
BTUH/h Inches (m) Inches (m) Feet (m) B Feet (m) A Feet (m) Oz. (g/m)
12k
18k - 24k
1/2" (ϕ12.7) 1/4" (ϕ6.35) 5/8" (ϕ12.7) 1/4" (ϕ6.35) 5/8" (ϕ12.7) 3/8" (ϕ9.52)
16 (5) 16 (5) 32 (10) 0.3 oz. (30) 16 (5) 32 (10) 65 (20) 0.3 oz. (30) 16 (5) 32 (10) 65 (20) 0.6 oz. (30)
In case that more
than 5m.
(16 Feet)
CAUTION: Capacity is based on standard length and maximum allowance length is based on reliability. Oil trap should be installed every 16.4 feet - 22.07 feet (5 - 7 meters.)
14
SERVICE
Evacuation
Micron Gauge
WARNING
REFRIGERA NT U NDER PR ESSU RE! Failure to follow proper procedures may cause property damage, personal injury or death.
1. Connect the vacuum pump to the gauge manifold's center hose. Connect low pressure gauge hose to gas side of outside unit. Open low side manifold gauge valve only.
2. Evacuate for approximately one hour to 500 microns.
3. Close the valve (low side) on the charge set. Turn off the vacuum pump and make sure the micron gauge does not go above 1,000 microns in approximately 5 minutes after turning off the vacuum pump.
4. Disconnect the charge hose from the vacuum pump.
If the vacuum pump oil becomes dirty or depleted, replenish as needed.
15
SERVICE
A
Gas Charging
CHARGING
CYLINDER
ND SCALE
WARNING
Refrigerants are heavier than air. They can "push out" the oxygen in your lungs or in any enclosed space.To avoid possible difficulty in breathing or death:
Never purge refrigerant into an enclosed room or
space. By law, all refrigerants must be reclaimed.
If an indoor leak is suspected, thoroughly ventilate
the area before beginning work.
• Liquid refrigerant can be very cold. To avoid possible frost bit e or blin d ness , avo id co ntac t wi th ref ri gera nt and wear gloves and goggles. If liquid refrigerant does contact your skin or eyes, seek medical help immediately.
• Always follow EPA regulations. Never burn refrig­ erant, as poisonous gas will be produced.
1. Connect the manifold gauge set center hose to the charging cylinder.
(This hose was disconnected from the vacuum pump.)
2. Purge the air from the air hose.
Open the valve of the refrigerant cylinder and crack open the center manifold gauge hose connection at the mani­fold gauge set to purge the air. Follow safety procedures above on handling liquid refrigerants.
3. Open the valve (low side) on the manifold gauge set and charge the system with R-410A vapor only.
4. Disconnect the charge hose from the 3-way valve's service port.
Use quick disconnect hoses to ensure refrigerant is not lost during disconnect process.
5. Replace caps to the valve stems and service port.
Using a torque wrench, tighten the service port cap to a torque of 13 lbs. per foot.
Check for gas leaks.
WARNING
REFRIGERA NT U NDER PR ESSUR E! Failure to follow proper procedures may cause property damage, personal injury or death.
16
SERVICE
Electronic Control
FUNCTION:
1. Remote receiving
2. Testing and forced running
3. Position set for indoor unit wind vane
4. LED displaying and alarm
5. ON or OFF timer
Input Voltage 208VAC - 230VAC 175VAC - 253VAC
6. Protection for the compressor
7. Current protection
8. High temperature protection of indoor heat exchanger in heating mode
9. Auto defrosting and heating recovery in heating mode
10.Anti-cold air in heating mode.
ELECTRONIC CONTROL
Input Pow er Frequency 60 Hz Ambient Temperature (°F) 11°F - 111°F (Cooling & Heating units)
(°C) -12°C - 44°C (Cooling & Heating units) (°F) 66°F - 111°F (Cooling only units)
(°C) 19°C - 44°C (Coo ling only units) Indoor Fan normal working amp Less than 1A Oudoor Fan normal working amp Less than 1.5A 4-Way valve normal working amps Less than 1A Swing motor 1 2V DC Compressor Single phase
W o r king amp less than 15A
50 Hz
17
SERVICE
Protection Features
The following features protect the reliability and life of the unit and compressor:
1. 3 minute delay for restarting the compressor.
2. Open circuit sensor protection
3. Fan speed sensor (if indoor fan speed is too low or too high, the unit will shut down).
4. Start protection (if the compressor attempts to start four times within 5 minutes, the unit will shut down, and LCD displays the failure information).
5. Overcurrent protection of the compressor.
Fan Only Operation
Fan speed will cycle between HIGH, MED, LOW and AUTO when pressing the “FAN SPEED” button on the remote control.
Cooling Mode Operation
For heat pump models, the reversing valve is de-energized in the cooling mode.
Upon a call for cooling (indoor room temperature rises about
1.8ºF (1.0°C) more than set point):
- the compressor, outdoor fan and low speed indoor fan will turn on
- if the indoor temperature is about 7.2ºF (4.0°C) more than set point, medium speed indoor fan will turn on.
- if the indoor temperature is about 9.0ºF (5.0°C) more than set point, high speed indoor fan will turn on.
If the indoor coil temperature drops too low, the compressor and outdoor fan will turn off and the indoor fan will continue to run until the indoor coil temperature rises to a predetermined temperature (5 minutes minimum).
For heat pump models, if the outdoor coil temperature gets too high, the compressor and outdoor fan will turn off until the outdoor coil temperature drops to a predetermined tempera­ture (5 minutes minimum).
Dehumidifying Mode Operation
For extra dehumidification, the indoor fan will run on low speed. Indoor coil temperature protection is provided the same as in the cooling mode.
Heating Mode Operation
For heat pump models, the reversing valve is energized in the heating mode (except when defrosting).
Upon a call for heating (indoor room temperature drops about
1.8ºF (1.0°C) more than set point):
- the compressor and outdoor fan will turn on
- the indoor fan will delay on for short period, then will ramp up to the selected fan speed to reduce “cold­blow”.
- When in the heating mode, the compressor will run for a minimum of 7 minutes.
If the indoor coil temperature rises too much, the compres­sor and fans will turn off.
Defrost Mode Operation
Defrost will be initiated when:
1. outdoor coil temperature stays less than 30ºF (-1°C) for more than 3 minutes, or
2. outdoor coil temperature is less than 32ºF (0°C) for 90 minutes of heating operation
Defrost will be terminated when:
1. outdoor coil temperature rises to 68ºF (20°C) or more
2. defrost time reaches 10 minutes
During defrost, the compressor and outdoor fan initially turn off, then after 10 seconds the indoor fan turns off, the reversing valve will shift, then 5 seconds later the compres­sor will turn back on. Near the end of the defrost cycle, the compressor will shut off for 25 seconds (when the compres­sor shuts off the outdoor fan will turn on), then just before the compressor turns back on, the reversing valve will shift back into the heating mode, and the compressor will turn back on. The indoor fan will turn back on when the indoor coil reaches a predetermined temperature.
Automatic Changeover Mode Operation
- If the room temperature is about 1.8ºF (1.0°C) below the set point, then the unit will turn on in the heating mode.
- If the room temperature is about 1.8-3.6ºF (1.0-2.0°C) above the set point, then the unit will turn on in the cooling mode.
- If the room temperature is close to set point, then unit will run in the fan only mode.
- Once the unit comes on in one mode of operation, it will not turn to the other mode of operation for at least 15 minutes.
- The motion of the directional louvers should be set appropriately for the operational mode (the direction of the louvers do not change automatically with the change in operation mode).
18
SERVICE
Forced Cooling Operation
Continuous cooling operation can be forced by selecting the FORCED COOLING button or switch. The unit will operate for 30 minutes continuously in the cooling mode, regardless of the indoor temperature. After 30 minutes the set point becomes 75ºF (24°C) and the unit operates in the Dehumidi­fying Mode. Note that all protections from the Cooling Mode and Dehumidifying Mode apply.
Forced Automatic Operation
Forced automatic operation can be forced by selecting the FORCED AUTO button or switch. The temperature set point will be 75ºF (24°C) .
Operation can be changed from Remote Mode to Forced Auto to Forced Cooling (then back to Remote Mode) by button selection on the remote.
Sleep Mode Operation
Sleep mode function is available for cooling, heating or automatic modes.
The set point temperature will rise (when cooling) or drop (when heating) about 1.8ºF (1.0°C) per hour for 2 hours, then the air circulation of low speed indoor fan will turn on. After 7 hours total, then unit will turn off.
Turbo Mode
For 12K models only, the indoor fan will operate in HIGH speed when the “TURBO” button on the remote is pressed. The unit will return to normal speed when “TURBO” button is pressed again. (TURBO MODE will be cancelled if the operation mode is changed, Forced Cooling mode is se­lected, or the unit is turned off). NOTE: SLEEP MODE is not available while in TURBO MODE.
Display Board
“OPERATION” indicator flashes once every second after power is on and is turned on continuously when the air conditioner is in operation.
“TIMER” indicator turns on when the TIMER is set to ON. If the outdoor unit starts defrosting “PRE-DEF” indicator is
turned on. “AUTO” indicator is turned on when Automatic Mode is
selected (18K & 24K models only).
Auto Restart Function
In the event of a sudden power failure, the unit is programmed to return to the previous settings before the power failure.
19
TROUBLESHOOTING
Display Board (18k and 24k MODELS)
OPERATI ON
Operation:
The indicator flashes once every second after the power is on and will be illuminated when the unit is in operation.
TIMER Indicator:
The indicator illuminates then TIMER is set ON.
PRE-DEF. Indicator (For cooling & heating mode only - for cooling only, it's FAN ONLY):
The air conditioner begins defrosting automatically if the outdoor unit frosts in heating operation. At this time, PRE-DEF. indicator illuminates.
For cooling only: when the unit operates in FAN ONLY mode, the FAN ONLY indicator illuminates.
AUTO Indicator:
This indicator will flash when the air conditioner is in AUTO operation.
12K Models
Mode
Indoor fan speed is abnormal for over 1 minute Indoor room temperature or evaporator sensor is
open circuit or short circuit Overcurrent protection of the compressor occurs 4 times Control Board error ON Indoor unit communication error Outdoor condenser temperature sensor is
open circuit or short circuit
x
= Off Õ = Flashing
AUTO
TI M E R
Operation
Lamp
Õ Õ
x
PRE.-DEF.
Timer Lamp
x
ON
Õ Õ
ÕÕ ÕÕ
Illuminates simultaneously Illuminates alternately
18K & 24K Models
Mode
Overcurrent protection of the compressor occurs 4 times Indoor room termperature sensor is
open circuit or short circuit Temperature sensor on indoor evaporator is open circuit or short circuit Temperature sensor on outdoor condenser is open circuit or short circuit (without for cooling only models) Outdoor unit protects (outdoor temperature sensor, phase, order, etc.) Control Board error
Indoor unit communication error
x
= Off Õ = Flashing
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
20
Operation
Lamp
Timer Lamp
Defrosting
Lamp
Auto
Lamp
ÕÕÕÕ
x
Õ
xx
xx x
xxx
Õ
xxx
Õ
xx
Õ
x
ÕÕ
x
Õ Õ
TROUBLESHOOTING
Diagnostic Chart (for 12k Models)
If, after energizing the unit, no indicator is lit and the unit cannot be operated, see the following chart.
Be sure all the wires (including power wi res and connection wires)
are OK
Yes
Check for AC (208-230V) power supply outputs to
outdoor control board
Yes
Check if AC (208-230V) exists at primary coil
of transformer (18K & 24K models only)
Yes
Check if AC 12V and AC 35V (+5%) exist at secondary coil
of transformer in the outdoor control board
No
No
Install good ones
No
Outdoor
control board
is Defective
Yes
Take off the secondary plug of transformer, and then check if AC
12V and AC 35V (+5%) exist at secondary coil of transformer
No
Transformer is defective
Yes
Check if DC 35V exists between
2 & 3 on the indoor terminal and DC 12V between 3 & 4
Yes
Check if DC 35V exists
at CN6 and 12V
at CN3
Yes
Uncertain problem on
Indoor control board.
Change it & check again.
No
Outdoor
control board
is Defective
No
Indoor
control board
is Defective
21
TROUBLESHOOTING
Diagnostic Chart (for 18k & 24k Models)
If, after energizing the unit, no indicator is lit and the unit cannot be operated, see the following chart.
Be sure all the wires (including power wires and connection wires)
are OK
Yes
Check fo r AC (20 8- 23 0V ) po wer supply outputs to outdoor
control board
Yes
Check if AC (208-2 30V) exists at primary coil
of outdoor (an d indoor) of transformer
Yes
Check if AC 12V exists at secondary coil
in the outdoor control board
No
Install good ones
No
Outdoor (or indoor )
control board
is Defective
No
Take of f the secondary plug of transf or mer, and then check if AC
12V exists at secondary coil ofoutdoor (and indoor) transformer
No
Outdoor (or i n door) transformer is de fective
Yes
Outdoor (or indoor )
control board
is Defective
22
TROUBLESHOOTING
Resetting of Outdoor Control Board Occurs Often During Operation:
If the power is on and the unit automatically enters into reset mode, the instantaneous voltage of the main chip is less than 4.5v. Check according to the following procedure:
Resetting of outdoor control board often occurs during operation.
Yes
After changing indoor cont rol board, check if the failure is repaired.
No
After changing indoor fan motor, check if the failure is repaired.
Yes
Power supply circuit has problems
Yes
Indoor Fan Speed Not Responding Properly (12k Models Only)
If the indoor fan speed has been unresponsive for over 1 minute:
Is connector connection good?
No
Indoor c ontrol board
is defective
Yes
Is voltage being applied to the fan motor?
Yes
Fan motor is defective
Repair the connector
Indoor
control board
is defective
23
TROUBLESHOOTING
Temperature Sensor Error:
These sensor errors include the indoor room sensor, the indoor evaporator sensor and the outdoor condenser temperature sensor.
Is connector connection g ood?
Replace the sensor
No
Overcurrent Protection of the Compressor occurs 4 times:
Over current protection of compressor occurs 4 times
After charging the main control board, check if the failure is released.
No
Repair the
connector
Indoor control board
is defective
Is the voltage of power supply too low (less than 187V)
Power supply fault
EEROM Error:
If you receive the EEROM error, this indicates that the indoor control board is defective.
No
Outdoor unit fault
(such as the
compressor)
24
TROUBLESHOOTING
Outdoor Unit Fails to Operate:
Check if power supply is good
Yes
Change outdoor control board and check if the error still exists
Yes
Compressor failure
Indoor Unit Communication Error:
No
Power Supply
failure
No
Outdoor
control board failure
Check to see if the signal wire is well connected
Yes
Change indoor control board and check if the error still exists
Yes
Outdoor control board failure, change outdoor control board
No
Connect the signal wire well
or change the signal wire
if it's the problem of the wires.
No
Indoor
control board
failure
25
TROUBLESHOOTING
Temperature Sensor Data:
Temp.
°F
14 -10 62.3 63 17 14.6 111 44 4.4 16 -9 58.7 64 18 13.9 113 45 4.2 18 -8 56.4 66 19 13.3 115 46 4.0 19 -7 52.2 68 20 12.6 117 47 3.9 21 -6 49.3 70 21 12.1 118 48 3.8 23 -5 46.6 72 22 11.5 120 49 3.6 25 -4 44.0 73 23 11.0 122 50 3.5 27 -3 41.6 75 24 10.5 124 51 3.3 28 -2 39.8 77 25 10.0 126 52 3.2 30 -1 37.2 79 26 9.6 127 53 3.1 32 0 35.2 81 27 9.1 129 54 3.0 34 1 33.3 82 28 8.7 131 55 2.8 36 2 31.6 84 29 8.3 133 56 2.7 37 3 30.0 86 30 8.0 135 57 2.6 39 4 28.3 88 31 7.6 136 58 2.5 41 5 26.9 90 32 7.3 138 59 2.4 43 6 25.5 91 33 7.0 140 60 2.4 45 7 24.2 93 34 6.7 142 61 2.3 46 8 22.6 95 35 6.4 144 62 2.2 48 9 21.8 97 36 6.1 145 63 2.1 50 10 20.7 99 37 5.9 147 64 2.0 52 11 19.7 100 38 5.6 149 65 2.0 54 12 18.7 102 39 5.4 151 66 1.9 55 13 17.8 104 40 5.2 153 67 1.8 57 14 16.9 106 41 5.0 154 68 1.8 59 15 16.1 108 42 4.8 156 69 1.7 61 16 15.3 109 43 4.6 158 70 1.6
Temp.
°C
Resistance
KΩ
Temp.
°F
Temp.
°C
Resistance
KΩ
Temp.
°F
Temp.
°C
Resistance
KΩ
26
WIRING DIAGRAMS
MSG-12CRN1
INDOOR UNIT
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
OUTDOOR UNIT
27
WIRING DIAGRAMS
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
MSG-12HRN1
INDOOR UNIT
OUTDOOR UNIT
28
WIRING DIAGRAMS
MSG-18CRN1 MSG-24CRN1
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HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
29
WIRING DIAGRAMS
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
MSG-18HRN1 MSG-24HRN1
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30
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