Daikin FVQ71BV1B Operation Manual

Also see for FVQ100BV1B: Service manual Technical data Installation manual

Contents

Daikin FVQ71BV1B Operation Manual Manual pdf 15 page image

English 11II. If the system does not properly operate exceptfor the above mentioned case, and none of theabove mentioned malfunctions is evident,investigate the system according to the fol-lowing procedures.1. If the system does not operate at all.• Check if there is a power failure.Wait until power is restored. If power failureoccurs during operation, the system automati-cally restarts immediately after the power sup-ply recovers.• Check if no fuse has blown.Turn off the power supply.• Check if the breaker isblown.Turn the power on withthe breaker switch inthe off position.Do not turn the power on with the breakerswitch in the trip position.(Contact your dealer.)2. If the system stops operating after operatingthe system.• Check if the air inlet or outlet of outdoor orindoor unit is blocked by obstacles.Remove the obstacle and make it well-venti-lated.• Check if the air filter is clogged.Ask a qualified service person to clean the airfilters (Refer to MAINTENANCE).3. The system operates but it does not suffi-ciently cool or heat.• If the air inlet or outlet of the indoor or the out-door unit is blocked with obstacles.Remove the obstacle and make it well-venti-lated.• If the air filter is clogged.Ask a qualified service person to clean the airfilters (Refer to MAINTENANCE).• If the set temperature is not proper (Refer toADJUSTMENT).• If the FAN SPEED button is set to LOWSPEED (Refer to ADJUSTMENT).• If the air flow angle is not proper (Refer toADJUSTING THE AIR FLOW DIRECTION).• If the doors or the windows are open. Shutdoors or windows to prevent wind from comingin.• If direct sunlight enters the room (when cool-ing).Use curtains or blinds.• When there are too many inhabitants in theroom (when cooling).Cooling effect decreases if heat gain of theroom is too large.SwitchONOFFTrip positionBreaker• If the heat source of the room is excessive(when cooling).Cooling effect decreases if heat gain of theroom is too large.

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