Forced Operating Mode (Emergency Operation) - Daikin Sky Air R-407C Service Manual

General Functionality
1.5

Forced Operating Mode (Emergency Operation)

1
Applicable units
2
3
Purpose
4
Starting conditions
5
Ending conditions
Emergency
operation
2–8
The forced operating mode is applicable for the following units:
Model type For this unit, you can go to...
RY35-45E(A)Z7V1 Forced cooling mode
Capacity control
RP71-250B Forced cooling mode
RYP71-250B Forced cooling mode
Forced heating mode
The table below describes the purpose of the forced operating mode.
If...
Remocon is malfunctioning, or
Indoor PCB is off line, or
Outdoor PCB is off line
You can operate the system manually by changing the emergency switch on the indoor and outdoor
PCB from "normal" to "emergency". However, when in emergency operation, the equipment cannot
control the temperature.
Make sure to set both indoor and outdoor unit to emergency. See page 2–10.
You can end the emergency operation by changing the emergency switch back to "normal" while the
power is OFF.
The table below describes what happens when you change the emergency switch to "emergency".
Changing the emergency switch to
"emergency" for the...
Indoor unit
Outdoor unit
Then...
Forced operating mode can be used to go to cooling or heat-
ing. In forced operating mode, the compressor is forced to
operate until the malfunctioning indoor or outdoor PCB is
back online.
Switches ON...
Indoor fan
Drain pump
Compressor
Outdoor fan(s)
ESIE02–01
Part 2 – Functional Description