Error code

Mitsubishi Electric PUHY code 7102

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Meaning

Outdoor unit Error in the number of connected units The number of connected indoor units exceeds the allowable value.

Member details

Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.

Possible causes

(1) Number of indoor units connected to the outdoor terminal block (TB3) for indoor/outdoor transmission lines exceeds limitations described below. Restriction on the Number of units number of units (1) Total number 1-13 : P220 model of indoor 1-16 : P250 models units (2) Total number of LOSSNAY units 0 or 1 (During auto address startup only) (2) The address of outdoor unit is set to 51-100 when it is the auto address (unit remote controller). "HO" will be displayed on the unit remote controller. (3) Disconnected transmission line of the outdoor unit (4) Short-circuited transmission line When (3) and (4) apply, the following display will appear. In case of network remote controller → Nothing appears on the display as no power is supplied to the remote controller. In the case of Unit remote controller → "HO" will blink.

Solution

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