Mitsubishi Electronics 2.5KKC, PLH-2 Troubleshooting, Following do not indicate any malfunction

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E7. Troubleshooting

Before you call out a repair man, check the following table to see whether there is a simple solution to your problem.

Problem

Display reading

Cause

Solution

Unit will not start.

Pilot lamp does not turn on even

Main power switch is turned off.

Turn main power on. Then press

 

when the POWER ON/OFF button

 

the POWER ON/OFF button to turn

 

is pressed.

 

the unit on.

 

 

 

 

 

 

Main power fuse has blown.

Replace the fuse.

 

 

 

 

 

 

Outdoor unit’s ground fault breaker is

Reset the ground fault breaker.

 

 

open.

 

 

 

 

 

 

 

A power cut has occurred (see NOTE

Wait until power is restored, then

 

 

below).

press the POWER ON/OFF button

 

 

 

to turn the unit on.

 

 

 

 

Unit discharges air well, but fails to

Remote controller shows that the unit

Improper temperature setting - e.g.

Check the set temperature on the re-

cool or heat the room well.

is operating.

you have selected COOL mode, but

mote controller and the actual intake

 

 

the desired temperature setting is

air temperature. Use the COOLER

 

 

higher than the current room tem-

and WARMER buttons to set the tem-

 

 

perature.

perature as described in “Selecting

 

 

 

a temperature” on page 10.

 

 

 

 

 

 

Filters are clogged.

Clean the filter and resume opera-

 

 

 

tion. See “Cleaning the filters and

 

 

 

the indoor unit” on page 15.

 

 

 

 

 

 

Outdoor unit’s intake or outlet is ob-

Remove the obstruction.

 

 

structed.

 

 

 

 

 

 

 

A door or window has been left open.

Shut door or window.

 

 

 

 

Unit does not start immediately.

Remote controller shows that the unit

Unit is waiting three minutes before

Wait until the unit restarts automati-

 

is operating.

restarting.

cally.The compressor may hesitate

 

 

 

resuming because a three-minute

 

 

 

resume prevention circuit is incor-

 

 

 

porated in the outdoor unit for pro-

 

 

 

tection of the compressor.

 

 

 

 

Unit stops soon after starting.

Remote controller check display

Indoor or outdoor unit’s intake or out-

Remove obstruction and restart the

 

reads “CHECK P6” or “CHECK P8”.

let is obstructed.

unit.

 

 

 

 

 

 

Filters are clogged.

Remove the obstruction. Clean the

 

 

 

filter and resume operation. See

 

 

 

“Cleaning the filters and the indoor

 

 

 

unit” on page 15.

 

 

 

 

NOTE: After a power cut, the unit will not restart automatically. You will have to restart it by pressing the POWER - ON/OFF button on the remote controller.

If none of the above apply, turn the main switch off and contact the dealer from whom you bought the air-conditioner, telling him the model name and the

nature of the problem. Do not try to fix the unit yourself.

In any of the following cases, turn off the main power switch and contact your local dealer for service:

•“CHECK” followed by “P1”, “P2”, “P3”, “P4”, “P5”, “P7” or “CENTRALLY CONTROLLED” is displayed on the control panel.

•The switches do not work properly.

•The circuit breaker trips frequently (or the fuse blows frequently).

•Water has accidentally been splashed into the unit.

•Water leaks from the unit.

•Something is accidentally dropped into the air-conditioner.

•An unusual noise is heard during operation.

The following do not indicate any malfunction:

Odours: smells such as tobacco or cosmetic odours may persist after they have been sucked into the unit.

Sound of liquid flowing inside indoor unit: this can occur during or after operation and is simply the sound of refrigerant being circulated inside the unit.

Ticking sound coming from indoor unit: this can occur when cooling or heating has just begun or has just stopped. It is caused by the indoor unit shrinking or expanding slightly due to the change in temperature.

The message “CENTRALLY CONTROLLED” appearing on the LCD panel: from time to time, this message may come up on the LCD panel. This does not indicate any malfunction.

Warning:

If the air conditioner operates but does not cool or heat (depending on model) the room, consult your dealer since there may be a refrigerant leak. Be sure to ask the service representative whether there is refrigerant leakage or not when repairs are carried out.

The refrigerant charged in the air conditioner is safe. Refrigerant normally does not leak, however, if refrigerant gas leaks indoors, and comes into contact with the fire of a fan heater, space heater, stove, etc., harmful substances will be generated.

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Contents PLH-2, 2.5KKC Contents Outdoor unit Safety PrecautionsRemote controller Indoor unitPower line, fuse or circuit breaker During operationGrounding Disposing of the unit Indoor unit and remote controller Introduction ComponentsComponents Operation Outdoor unitOperation modes Switching the unit on/off CoolingDrying dehumidifying HeatingSelecting a temperature Automatic cooling / heatingUsing the timer Set the current timeSet the time to stop the unit as follows Using the timer Clock on OFFSet the time to start the unit as follows Changing the set timesSelecting a fan speed Auto Start OperationAuto Stop Operation Adjusting vertical airflow direction Vertical airflow adjustmentPress button to select the vertical airflow direction Cleaning the filters and the indoor unit Tips for best results CareCare and cleaning Care and cleaningEnd-of-season Pre-season checksTroubleshooting Following do not indicate any malfunctionSpecifications Operating rangeBG79S987H02

PLH-2, 2.5KKC specifications

Mitsubishi Electronics has long been recognized for its innovative technology and commitment to high-quality products, and among its noteworthy offerings is the 2.5KKC,PLH-2. This advanced air conditioning unit exemplifies the company's dedication to energy efficiency, environmental sustainability, and user comfort.

The 2.5KKC,PLH-2 unit is designed for residential and small commercial use, featuring a sleek and modern design that can easily fit in various interiors. With a cooling capacity of 2.5 kW, this system is ideal for moderate-sized rooms, ensuring effective temperature control and comfort for users.

One of the main features of the 2.5KKC,PLH-2 is its inverter technology. This feature allows the air conditioning unit to adjust its cooling output according to the ambient temperature, thereby reducing energy consumption without sacrificing comfort. The inverter system operates smoothly, producing less noise and creating a more pleasant living environment.

Additionally, the 2.5KKC,PLH-2 utilizes advanced filtration technology, which includes a multi-layer filter that captures airborne particles, dust, and allergens. This characteristic is particularly beneficial for allergy sufferers, as it helps to maintain cleaner indoor air quality. The unit also includes a self-cleaning function, which helps to reduce maintenance needs and extend the lifespan of the product.

The user interface of the 2.5KKC,PLH-2 is intuitive, featuring a remote control and a digital display that allows for easy adjustments to temperature settings, fan speeds, and timer functions. The programmable timer and sleep mode features further enhance user convenience by allowing for pre-set operation times, ensuring that the space is comfortable upon return without unnecessary energy use.

In terms of environmental impact, Mitsubishi Electronics emphasizes the use of R32 refrigerant in the 2.5KKC,PLH-2, which has a lower Global Warming Potential (GWP) compared to traditional refrigerants. This aligns with the company's sustainability goals and regulations aimed at reducing greenhouse gas emissions.

Overall, the Mitsubishi Electronics 2.5KKC,PLH-2 is a prime example of modern air conditioning technology, blending energy efficiency, effective performance, and user-friendly features in a compact design. Whether for residential or light commercial spaces, it stands as a reliable choice for achieving optimal indoor comfort.
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