Hitachi air conditioner troubleshooting

Hitachi air conditioners are an incredible combination of ideas and progressive technologies providing comfort in your house. The troubleshooting system, which one can see below in form of a table, helps to conduct diagnostics of Hitachi equipment even to simple users.

Problem Possible CausesWhat To Do
■ The air conditioner is unplugged.• Make sure the air conditioner plug is pushed completely into the outlet and switched on.
Air conditioner does not start■ The fuse is blown/circuit breaker is tripped.• Check the house fuse/circuit breaker box and replace the fuse or reset the breaker.
■ Power failure.• If power failure occurs, switch off and disconnect /unplug the power cord. When power is restored, reconnect (plug in) the power cord, switch on the power and wait 3 minutes to restart the air conditioner to prevent tripping of the compressor overload.
■ Airflow is restricted.• Make sure there are no curtains, blinds, or furniture blocking the front of the air conditioner.
Air conditioner does not cool as it should■ The air filter is dirty.• Clean the filter at least every 2 weeks. See the operating instructions section.
■ The room may have been hot.• When the air conditioner is first turned on you need to allow time for the room to cool down.
■ Cold air is escaping.• Check for open furnace floor registers and cold air returns.
• Set the air conditioner’s vent to the closed position
■ Cooling coils have iced up.• See Air Conditioner Freezing Up below.
Air conditioner freezing up■ Ice blocks the air flow and stops the air conditioner from cooling the room.• Set the fan at MED or HIGH until the ice melts.

Error codes and troubleshooting