General Information; Specific Features; How To Read The Model Name - Mitsubishi Heavy Industries SRK20ZD-S1 Technical Manual

1.2.1 GENERAL INFORMATION

(1) Specific features

The "MITSUBISHI HEAVY INDUSTRIES, LTD." room air-conditioner: SRK series are of split and wall mounted type and the unit
consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling or
heating equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor.
(a) Inverter (Frequency converter) for multi-steps power control
¡
Heating/Cooling
The rotational speed of a compressor is changed in step in relation to varying load, to interlock with the indoor and outdoor
unit fans controlled to changes in frequency, thus controlling the power.
¡
Allowing quick heating/cooling operation during start-up period. Constant room temperature by fine-tuned control after the
unit has stabilized.
(b) Fuzzy control
¡
Fuzzy control calculates the amount of variation in the difference between the return air temperature and the setting tempera-
ture in compliance with the fuzzy rules in order to control the air capacity and the inverter frequency.
(c) Remote control flap & louver
The Flap & louver can be automatically controlled by operating wireless remote control.
¡ Flap swing
¡ Louver swing
¡ Multi-directional Air Flow : Activating both up/down air swing and left/right air swing at the same time results in a multi-
¡ Memory flap
(d) Self diagnosis function
¡
We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as
follows.
TIMER light
ON

(2) How to read the model name

Example :
: The flaps swing up and down successively.
: The louvers swing left and right successively.
directional air flow.
: Once the Flap & louver position is set, the unit memorizes the position and continues to operate
at the same position from the next time.
RUN light
1 time flash Heat exchanger sensor error
2 time flash
Room temperature sensor error
6 time flash
Indoor fan motor error
SR K 63 Z E - S1
RUN light
keeps flashing
RUN light
ON
RUN light
2 time flash
R410A models
Series No.
Inverter type
Product capacity
Wall mounted type
Split type room air-conditioner
71
- -
TIMER light
1 time flash Outdoor temperature sensor error
Outdoor heat exchanger sensor
2 time flash
error
4 time flash Discharge pipe temp. sensor error
1 time flash Current cut
2 time flash
Trouble of outdoor unit
3 time flash
Over current
5 time flash Over heat of compressor
6 time flash
Error of signal transmission
7 time flash
Outdoor fan motor error
2 time flash Rotor lock