Daikin FT25JV1B Installation Manual download pdf (Page 18)

YES

Is outdoor unit data displayed wit

transmission monitor connected to

terminal board of indoor unit?

࡮Faulty outdoor unit PC board

࡮Faulty transmission wire

࡮To Malfunction 7-6

Replace indoor unit PC board.

Does LED-B break blinking sometimes?

Noise entered the power supply line.

(Refer to the example of noise described i

Malfunction 7-1.)

Normal

Not displayed

Malfunction 7-4: Indoor Unit LED-B Off (LED-A Blinks)

Possible

causes

Ԙ Faulty transmission wiring

ԙ Faulty outdoor unit PC board

Ԛ Faulty indoor unit PC board

(Reference)

Since this malfunction relates to outdoor unit very much, diagnose together with Malfunction 7-5 and 7-6. If

the outdoor unit can be easily checked, it is recommended to check of outdoor unit LED-A first to start

diagnosing with the outdoor unit.

(Reference example) LED-B is turned off sometimes. (Other LED blinks normally.)

Check for indoor unit data

without connection change.

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Daikin FT25JV1B Installation Manual Page 18