DENSO Craftiong the Core

Frequently asked questions about central air conditioning system

  • The central air conditioning system does not operate.

    Check the following:
    Has a power outage occurred?
    Has the breaker tripped?

  • The central air conditioning system does not cool or heat the room well.

    Check the following:
    Are the areas around the air outlets and inlets of the indoor and outdoor units blocked
    Is the air volume set to “Low”?
    Is the temperature setting appropriate?
    Are any windows or doors open?
    Is the air filter clogged?
    Is there a heat source or something that produces steam around the remote controller?
    Is the power turned on just after the breaker is turned on again in case of a power outage?
    Does direct sunlight enter the room during cooling?
    Does the air conditioning system operate in defrosting mode during heating? (The indoor unit does not operate during defrosting.)
    Is the air conditioning system operated in Simple Eco mode?