Mitsubishi Electric PURY-P200YLM-A(1) Service Handbook page 153

[5-2 Outdoor Unit Control ]
2) When combination of units
For a combination of units, operation is split so that there is a unit for defrosting and a unit for the heating operation. If two of
the combination of units are operated, the OC is defrosted and then the OS is defrosted. If one of the combination of units is
operated, the stopped unit is started, the unit that was operating is defrosted, and then the unit that was stopped before the
control began is defrosted. At that time, operation by the outdoor units that make up the combination is as shown in the table
below.
Outdoor unit fan 1
Outdoor unit fan 2
SV1a
SV5b
SV9
SV10
SV11
SV4a
SV4b
SV4c
SV4d
SV7(EP200-EP500 models
only)
21S4a
21S4b
(3) Continuous heating mode end conditions
Continuous heating mode will end when the Continuous heating mode time in the table below is reached or, in the case of a
combination of units, when the pipe temperatures (TH9, TH11, and TH12 (P450, P500, EP400, EP450, and EP500 only))
have remained above the temperature in the table below for 3 minutes.
Continuous heating mode time
Piping temperature (TH9,
TH11,TH12(P450, P500, EP400,
EP450, EP500 models only))
When the Continuous heating mode ends, the frequency is reduced once.
HWE1314A
P200-P400, EP200-EP350 models
Unit in defrost cycle Unit in operation
Stopped
-
OFF
OFF
OFF
ON
ON
OFF
OFF
-
OFF
OFF
ON
-
Single unit
When 20 minutes have passed When 20 minutes have passed
- 142 -
P450-P500, EP400-EP500 models
Unit in defrost cycle
In operation Stopped
Stopped
ON
OFF
OFF
OFF
ON
ON
OFF
ON
Combination units
12°C [43°F]
Unit in operation
In operation
In operation
OFF
OFF ON
ON OFF
ON OFF
ON OFF
OFF ON
OFF ON
OFF ON
OFF OFF
OFF OFF
ON
ON
GB