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Mitsubishi Electric PURY-P72 Service Handbook page 157

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Table of Contents
- - - - - - - - - -
- - - - - -
[VII Control]
(2) Outdoor unit (cooling only, heating only, cooling main and heating main modes)
_ _ _ _ Normal operation
----Error
- - - - - - - _. Unit in the stopped state
YES
NO
"HO"
I "PLEASE WAIT"
blinks
L------"Oc.;
n
c.:
t '-'h.:.ec.;re'-'m-'-'l0t:::::e::c:::::o::n::tr::o::lle::r==-_< Indoor
unl~Note
1
regisle!ed 10 lhe
>
remote contreller
r--------<.2
} - - - - J ,
NO
.---------------
I
Protection function
self-holding cancelled.
YES
fan
i40------<
Operation
od
Cooling only, Heating only
Mixture of units in cooling and heating
"Note 2
Error mode
> - - - - - - - - - - - - - - - - - - - - - ,
YES
"Note
4
"Note 3
Mixture of units in cooling and heating
1.
52C1 4-way valve OFF
2. Inverter output OHz
3. Fan stop
4. All solenoid valves OFF
"Note 1. For about 3 minutes after power on, search for the indoor unit address, for the remote controller address,
and for the group information will start. During this, "HO"I "PLEASE WAIT" blinks on the display of the
remote controller. When the indoor unit to be controlled by the remote controller is missing,
"HO"I "PLEASE WAIT" keeps blinking on the display of the remote controller even after 3 or more minutes
after power on.
"Note 2. The system may go into the error mode on either the indoor unit or the outdoor unit side. The outdoor stops
only when all of the connected indoor units are experiencing problems. The operation of even a single
indoor unit will keep the outdoor unit running. The error will be indicated on the LED display.
"Note 3. The units will follow the operation mode commands from the BC controller
"Note 4. When the operation mode commands from the Be controllers are mixed (both cooling and heating), the
actual operation mode is determined by the outdoor unit.
HWEOB03A
- 147-
GB
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