• Two 3/8 to 1/2 in. Refrigerant line adaptors are furnished with MS8-ZO-24P3 and MS8-ZO-30P4 outdoor units for the suction line connection to the outdoor unit when 1/4 in. Line sets are used with MS8-HI-18P1 indoor units.
• Air conditioners Lennox MS8 SERIES include from MS8 series to mini-split single-zone systems for cooling and heating. There are indoor and outdoor units. Remote control of air conditioners is available.

This manual is applicable only to the following models.

Lennox Air Conditioner Inverter Split Type Error Codes;

LNIV2610 LNIV3510 LNIV5010 LNIV6510

M = Mini-Split Cooling Efficiency S = Standard Efficiency Major Design Sequence A = 1st Generation B = 2nd Generation Refrigerant Type 4 = HFC-410A Refrigerant Circuits M = Multiple Circuits Minor Design Sequence 1 = 1st Revision P = 208/230V-1 phase-60hz Nominal Cooling Capacity 018 = 1.5 ton 030 = 2.5 tons 036 = 3 tons 048 = 4 tons Unit Type. Lennox Heating-Pump Air-Conditioner. Come check out our selection of Lennox Compressor Mini Splits in the categories above! Lennox Compressor ADVANTAGES A lot of people are not aware that the air conditioner units from the brand Lennox have long been recognized as one of the most environmentally friendly; in addition to this, a lot of people have already attested to the fact that a particular. Split Air Conditioner Thank you for selecting LENNOX air conditioners.Please read this manual carefully before operation and keep it for further reference. OWNER'S MANUAL LENNOX AIRCONDITIONERS MODEL: LM018CI-100P232-1X LM018CO-100P232-1X LM024CI-100P232-1X LM024CO-100P232-1X LM018HI-100P232-1X LM018HO-100P232-1X LM024HI-100P232-1X LM009CI.

Indoor Unit Error Display:

Lennox Split AC Error Codes

If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly.

Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.

Meaning of Each Error

F1: Return air temperature sensor open/ short circuited

P6: Drive board communication error

F2: Evaporator temperature sensor open/ short circuited

H3: Compressor overheating protection

b5: Indoor unit liquid valve temperature sensor open/short circuited

LP: Indoor and outdoor units unmatched

b7: Indoor gas valve temperature sensor open/ short circuited

dn: Communication line misconnected or expansion valve error

P7: IPM temperature sensor open/short circuited

E7: Running mode conflict

F3: Outdoor ambient temperature sensor open/ short circuited

Fo: Pump-down

F4: Outdoor unit condenser mid-tube temperature sensor open/short circuited

C5: Jumper error

F5: Discharge temperature sensor open/ short circuited

H1: Forced defrosting

E6: Indoor and outdoor communication error

Lc: Compressor startup failure

PL: DC bus under-voltage protection

E4: High discharge temperature protection

PH: DC bus over-voltage protection

E8: Overload protection

U1: Compressor phase current sensing circuit error

E5: Whole unit over-current protection

HE: Compressor demagnetization protection

P5: Over phase current protection

Hc: PFC protection

H7: Compressor desynchronizing

P8: IPM Temperature Protection

H5: IPM Current protection

L9: Over-power protection

Ld: Compressor phase loss/reversal protection

F0: System charge shortage or blockage protection

F8: Frequency restricted/reduced with whole unit current protection

PU: Capacitor charging error

IPM: Frequency restricted/reduced with

En: Current protection

E1: High pressure protection

F9: Frequency restricted/reduced with high discharge temperature

E3: Low pressure protection

FH: Frequency restricted/reduced with antifreezing protection

LE: Compressor stalling

F6: Frequency restricted/reduced with overload protection

LF: Over-speeding

EU: Frequency restricted/reduced with IPM temperature protection

PF: Drive board temperature sensor error

E9: Indoor unit full water error

P9: AC contactor protection

E2: Anti-freezing protection

PE: Temperature drift protection

PP: AC input voltage abnormal

Pd: Sensor connection protection

U5: Whole unit current sensing circuit error

U3: DC bus voltage drop error

U7: 4-way valve reversing error

L3: Outdoor fan 1 error protection

H6: Motor stalling

LA: Outdoor fan 2 error protection

U8: PG motor zero-crossing protection

Lennox Air Conditioner Mini Split Error Codes

Indoor and Outdoor Error Codes

Lennox AC Troubleshooting

Please check below items before asking for maintenance.

Phenomenon: Indoor unit can’t receive remote controller’s signal or remote controller has no action.

Check items:

1. Whether remote controller is within the signal receiving range?
2. Whether there are obstacles?
3. Whether remote controller is pointing at the receiving window?
4. Is sensitivity of remote controller low; fuzzy display and no display?
5. No display when operating remote controller?
6. Fluorescent lamp in room?

Solution:

1. Signal receiving range is 8m.
2. Remove obstacles.
3. Select proper angle and point the remote controller at the receiving window on indoor unit.
4. Check the batteries. If the power of batteries is too low, please replace them.
5. Check whether remote controller appears to be damaged. If yes, replace it.
6. Take the remote controller close to indoor unit.

Phenomenon: No air emitted from indoor unit

Check items:

1. Air inlet or air outlet of indoor unit is blocked?
2. Under heating mode, indoor temperature is reached to set temperature?
3. Heating mode is turned on just now?

Solution:

1. Eliminate obstacles.
2. After reaching to set temperature, indoor unit will stop blowing out air.
3. In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.

Phenomenon: Air conditioner can’t operate

Check items:

1. Power failure?
2. Is plug loose?
3. Air switch trips off or fuse is burnt out?
4. Wiring has malfunction?
5. Unit has restarted immediately after stopping operation?
6. Whether the function setting for remote controller is correct?

Solution:

1. Wait until power recovery.
2. Reinsert the plug.
3. Ask professional to replace air switch or fuse.
4. Ask professional to replace it.
5. Wait for 3min, and then turn on the unit again.
6. Reset the function.

Phenomenon: Mist is emitted from indoor unit’s air outlet

Check items: Indoor temperature and humidity is high?

Solution: Because indoor air is cooledrapidly. After a while, indoor temperature and humidity will be decrease and mist will disappear.

Phenomenon: Cooling ( heating) effect is not good

Check items:

1. Voltage is too low?
2. Filter is dirty?
3. Set temperature is in proper range?
4. Door and window are open?

Solution:

1. Wait until the voltage resumes normal.
2. Clean the filter.
3. Adjust temperature to proper range.
4. Close door and window.

Phenomenon: Outdoor unit has vapor

Check items: Heating mode is turned on?

Solution: During defrosting under heating mode, it may generate vapor, which is a normal phenomenon.

Phenomenon: ”Water flowing” noise

Check items: Air conditioner is turned on or turned offjust now?

Solution: The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.

Phenomenon: Cracking noise

Check items: Air conditioner is turned on or turned offjust now?

Solution: This is the sound of frictioh caused by expansion and/or contraction of panel or other parts clue to the change of temperature.

The Complete List of Mini Split Manufacturers

This list is constantly evolving. As new mini split manufactures come into business we will add them to the list. If you know of a mini split manufacturer that is not on our list please leave a comment below so that we can get them added!

We try to provide an accurate synopsis about each and every manufacturer on this list. (Click any name on the list to scroll down and read the synopsis.) If you represent one of these manufactures please contact us, we would love to have your input!

Mitsubishi

Obviously you have heard this company’s name before. Mitsubishi a giant conglomerate based out of Japan. They were founded in the 1800’s by Yataro Iwasaki and got their start as a shipping company. Over the next 150 years they have grown into an international brand with over 600 companies under their umbrella.

All Mitsubishi companies utilize three basic principles. They are 3 different Japanese phrases that were penned by Koyata Iwasaki way back during WWII in the 1930 era. The three principles are: Shoki Hoko, Ritsugyo Boeki, and Shoji Komei. Shoki Hoko is their belief that they must be responsible to the societies that they do business in. Ritsugyo Boeki is their support of peaceful global relationships though business. Lastly, Shoji Komei states Mitsubishi’s dedication to integrity over profitability.

The division that is responsible for mini split A/C systems is technically titled Mitsubishi Electric. Mini splits are made and distributed by the cooling & heating subdivision of Mitsubishi Electric. Their official website is http://www.mitsubishicomfort.com .

Mitsubishi makes some of the most popular mini split air conditioner systems out there. They first started doing business in the USA all the way back in 1980. Mitsubishi Electric introduced their Mr. Slim line of products in 1982 and are still selling them. It is technically a heat pump not just a mini split ac but they are of a similar design and provide a similar functions. Heat pumps are more geared toward cold climates rather than hot climates because they provide heat as well as cooling. A mini split a/c will provide cooling only. Here is a video directly from Mitsubishi that goes into detail about how their Mr. Slim heat pump works. https://www.youtube.com/watch?v=QovhagNTyaE

They continued to expand their heat pump line in the 1990’s with the introduction of the
MXZ line. This was a product that was designed to heat more than one room. In fact you can use this product today to provide heating to up to eight total rooms.

Today Mitsubishi has many different options to choose from. They sell both indoor and outdoor units separately so you can create the solution that is best for your home. Mitsubishi Electric now has mini split ac only units as well as full heat pump systems.

Pioneer Mini Split Systems

The Pioneer mini split brand is owned by Parker Davis HVAC Systems is one of world’s many producers of heating and cooling products. This organization is one of the biggest providers of inexpensive ductless mini splits in the USA. They have been operating as Pioneer since 1995.

Pioneer has been set up to offer direct sales of a/c units to the overall population in North America. Their all-around prepared associates in the client administration and specialized help divisions are at your administration for any inquiries and to give a fine purchasing background to our customers.

Pioneer is often confused as being related to the Pioneer Electronics Corporation that is so well known for stereo equipment and other common electronics. They are not related at all. It’s easy to understand how someone could get confused but upon further investigation you will learn that they don’t even share a common history. Pioneer Electronics is a Japanese corporation and Parker Davis, the owner of the Pioneer mini split brand is headquartered in Miami.

Pioneer makes a few small-scale split units with 12,000 BTU option being one of them. A decent amount of Pioneer units have a heat pump so you can heat and cool your home with one unit. You can watch a review on one of the split units, the Pioneer Ductless Mini Split AC 12000btu here https://www.youtube.com/watch?v=-xg0KODch9g

Pioneer brand heat pump systems come in a range of capabilities; from 9000BTU to 48000BTU per hour. They use an inverter setup with a multi-speed compressor, which helps with making higher efficiency levels. All Pioneer ductless mini splits include a wireless digital remote controller that allows users to easily select between the multiple operating modes. Also there is an automatic mode that allows for fully automatic function through the mini split computer.

One of Pioneer’s Newest Designs is the Pioneer WYS Series Ductless Wall Mount Mini Split System. It was engineered for unrivaled efficiency.

Check Out These Pioneer Mini Split Reviews

Fujitsu General

Fujitsu is a large Japanese conglomerate. In addition to mini splits, Fujitsu also manufactures many other electronic products including: servers, computer peripherals, and even automotive relays.

Way back in 1936, long before Fujitsu began manufacturing mini split air conditioners they got their start with making radios for the Japanese market. It wasn’t until 1971 that Fujitsu got into the A/C business. Today, their mini splits are distributed worldwide.

Fujitsu offers mini split systems that will work in up to eight rooms. These multi-split air conditioning systems can pair, ceiling cassettes or wall mount units with a single outdoor unit. Most Fujitsu air conditioners are made in either China or Thailand.

Senville

Senville is a Canadian company that is headquartered in Montreal. They have locations on both the East and West coasts in the United States. One of the things that people consistently compliment Senville on is how fast they ship out their mini split units. They are also known for having excellent customer service. It should be noted that while Senville is a North American company, all of their mini splits are manufactured in China.

Carrier Air Conditioning

Carrier is one of the most well known air conditioner manufacturers in the US. They are the oldest A/C company in the world because their founder, William Carrier, invented air conditioning! That was way back in 1902 but they are still going strong.

Mini split systems are a fairly new product for Carrier. They traditionally produced ducted A/C systems but have recently started manufacturing mini split systems. When you goto the official Carrier website you won’t find any listings for mini splits, however. Carrier exclusively refers to mini split systems by their proper name, Ductless Systems.

Daikin

Daikin is one of the more recognizable names on this list of mini split manufacturers. They are arguably the largest air conditioning manufacturer in the world.

Lennox Mini Split Ms8 User Manual Pdf

Daikin was founded in Japan in 1951. Since then they have expanded their operations to over 140 countries. They produce a wide variety of air conditioning systems including: mini splits, forced air systems, commercial, and industrial A/C.

Gree

Lennox Mini Split Ms8 User Manual

Gree has been a mini split manufacturer for over 20 years. They are a Chinese company with a global presence and probably the largest ductless system manufacturer in the world.

Innova

Innova is an Italian A/C manufacturer that was founded in 2004. One of the key fundamental values at Innova is environmental friendliness. Their founder started the company to help make a positive impact on the environment.

One of the coolest things about Innova is that they actually manufacer their own mini splits at their factory in Storo, Italy. The vast majority of mini split manufacturers on this list are either based or manufactured in Asia.

Innova is really on the cutting edge of ductless technology. They recently introduced their Air Conditioner 2.0 which claims work without needing an onside unit!

MrCool

MrCool is one of the fastest growing brands on our ultimate list of mini split manufacturers. They have really captured the hearts (and wallets) of the DIY crowd. They even recently introudced a mini split unit that is designed for the homeowner to install. This is the very fist mini split company to manufacture an A/C that doesn’t require professional installation. That means that the warranty still applies even for installations by non-licensed people.

Ideal-Air

Ideal-Air is an American company based outside Portland, OR. They have a fairly large dealer network across the USA. One of the benefits of purchasing a mini split from Ideal-Air is the US Based support that they offer. They claim to offer “best-in-class” customer support.

Ideal-Air sells both wall-mount and ceiling cassette units. Their largest ductless A/C is 48,000 BTU. Ideal-Air is a unique company because they don’t offer any traditional ducted systems. Even their commercial line is ductless.

Klimaire

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Blueridge
Comfort-aire
LG
Friedrich
DuctlessAire
Ramsond
Panasonic
Hessaire
Kingsfin
Daizuki
Air-Con
Kaussmann
Amira
Classic America
Frigidaire
Sharp
YMGI
Cooper and Hunter
SuperAir
Rheem
Celiera
Perfect Aire