No.
Item
Specification
Remarks
31
9
When cool:
recovery control
of refrigerant and
oil
When the indoor unit group that is in the state of stop or reaches certain
temperature or conducts " fan only " receives the signal of recovery of
refrigerant and oil from outdoor unit, the PMV of indoor unit group will
open some opening.
10
When heat:
recovery control
of refrigerant and
oil
When the indoor unit group that is in the state of stop or reaches certain
temperature or conducts " fan only " receives the signal of recovery of refrigerant and oil from outdoor unit, it will conduct the following cont-rols:
(1) the PMV of indoor unit group will open some opening;
(2) The fan stops
(3) Detect the temperature of TC2, close PMV.
11
Compensation
control of short
and interrupted
running
(1) After running for 5 minutes, force it to run even if it has reached the
setting temperature;
(2) But, when changing the setting temperature to make it reach setting
temperature will enter into the state of stop. In addition, the protect-
ion control will be prior.
12
Control of drain
pump
(1) When "cooling", the drainage pump will run;
(2) When the floating switch acts, the compressor will stop and the
drainage pump will run;
(3) When the floating switch act continuously for 2 minutes, the fault
code will be given.
Fault code
is "Ob"
13
Control of
compensation
electric heater
(1) When heating, it will run as per the modes in the following diagrams:
[Room temperature Ta]
electric heater OFF
electric heater ON
Ts
-2
-3
TC2 [heat exchange temperature TC2 ]
electric heater OFF
electric heater ON
6 0
5 2
Excess heat
eliminating
14
(1) When closing the unit under "heat" state, let the indoor fan run
for 30 seconds under the state of "LOW airflow"
15
(1) When receiving the signal of airflow swing from the remote controller
of the central controller, if the indoor fan is in the running
state, the automatic airflow swing will be conducted.
Automatic
airflow swing
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