Ho" Or "Waiting For - Mitsubishi Electric PURY-M200YNW-A1 Service Handbook

[8-2 ME remote Controller Problems ]
8-2-3 "HO" or "Waiting for ···" Does Not Go Off the Screen.
1. Phenomena
"HO" or "Waiting for ···" display on the remote controller does not disappear, and no operation is performed even if the button
is pressed.
2. Cause
Without using MELANS
1) Outdoor unit address is set to "00"
2) A wrong address is set.
The address of the indoor unit that is connected to the remote controller is incorrect. (It should equal the ME remote controller
address minus 100.)
A wrong address is set to the ME remote controller. (100 must be added to the address of the indoor unit.)
3) Faulty wiring of the terminal block for transmission line (TB5) of the indoor unit in the same group with the remote controller.
4) The centralized control switch (SW5-1) on the outdoor unit is set to ON.
5) Disconnection or faulty wiring of indoor unit transmission line.
6) Disconnection between the terminal block for M-NET line connection (TB5) of the indoor unit and the male connector (CN2M)
7) The male power supply connectors on 2 or more outdoor units are connected to the female power supply switch connector
(CN40) for the transmission line for centralized control.
8) Outdoor unit control board failure
9) Indoor unit control board failure
10) Remote controller failure
Interlocking control with MELANS
1) No group registration is made using MELANS. (The indoor unit and the ME remote controller are not grouped.)
2) Disconnected transmission line for centralized control (TB7) of the outdoor unit
3) The male power supply connector is connected to CN40 on more than one outdoor unit, or the connector is connected to CN40
on the outdoor unit in the system to which a power supply unit for transmission line is connected.
Using MELANS
1) When MELANS is used, "HO" or "Waiting for ···" display on the remote controller will disappear when the indoor unit and the
local remote controller (ME remote controller) are grouped.
If "HO" does not disappear after the registration, check items 1) through 3) in the "Cause" column of the section on interlocked
control with MELANS.
BS_08_L
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chapter 8 -