Panasonic S-22KA1E5 - Heating Operation; Auto Operation

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15.4 Heating Operation
15.4.1 Thermostat Control
• Thermostat off point (D) is determined using Indoor Intake Temperature - Remote Control Setting Temperature.
Default thermostat off point is shown in table below:
Low Static Hide-away
(MA1-series)
Model
Wall Mounted
(KA1-series)
60 x 60 Cassette
(YA1-series)
95 x 95 Cassette
(UA1-series)
Slim Hide-away
(NA1-series)
4.5 / 5.6
kW
6.3 / 7.1 / 9.0
kW
Indoor fan
speed  Me
2.0 3.5 -1.5 2.5 2.5 2.5
Thermostat OFF
Point (D)
Indoor fan
speed < Me
2.0 4.0 -2.0 2.5 2.5 2.5
Thermostat
OFF
Thermostat OFF point
Thermostat OFF point - 1.0
Heating
Intake air temperature – remote
controller temperature setting
Figure 15: Heating thermostat OFF characteristic
• Thermostat OFF continues for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >
Thermostat OFF point – 1.0°C
15.4.2 Expansion Valve Control
• During Thermostat OFF, the indoor unit expansion valve operation is controlled by the system.
15.5 Auto Operation
• Operation mode is determined by indoor intake temperature and remote control setting temperature.
o Indoor intake temperature < remote control setting temperature, Heat mode is selected.
o Indoor intake temperature  remote control setting temperature, Cool mode is selected.
• Indoor intake temperature (even for the indoor unit is standing by for different operation mode) is judged by
o Operate indoor fan at Lo- for 30 seconds, for indoor unit with DC fan motor.
o Operate indoor fan at Lo for 30 seconds, for indoor unit with AC fan motor.
• Immediate judgment to Heat mode if
o Indoor intake temperature < 16°C
o Deice operation
• The operation mode judgment repeats every 3 hours.
• For second judgment onwards
o Indoor intake temperature  remote control setting temperature + 3°C change from Heat Mode to Cool Mode.
o Indoor intake temperature < remote control setting temperature - 3°C, change from Cool Mode to Heat Mode.