Selection Of The Annual Cooling Function; Heating Only Function; High Power Operation - Mitsubishi SRK20ZSX-W Technical Manual

(5) Selection of the annual cooling function

(a) The annual cooling control is valid from factory default setting. It is possible to
disable by cutting jumper wire (J3), or changing the setting of dip switch (SW2-
4) on the interface kit (option) PCB if it is connected.
Jumper wire
(J3)
Shorted
Shorted
Open
Open
Notes (1) Default states of the jumper wire (J3) and the interface kit at the shipping from factory – On the
PCB, the dip switch (SW2-4) is set to enable the annual cooling function.
(2) To cancel the annual cooling setting, consult your dealer.
(b) Content of control
( i ) If the outdoor air temperature sensor (TH3) detects below 5°C, the indoor
unit speed is switched to 8th step.
(ii) If the outdoor air temperature sensor (TH3) detects higher than 7°C, the indoor unit speed is changed to the normal control speed.

(6) Heating only function

(a) Heating only function can be enabled by disconnecting the jumper wire (J4).
(b) Control contents
Operation mode setting
COOL/DRY/FAN
AUTO/HEAT

(7) High power operation

Pressing the HI/ECO button intensifies the operating power and initiates powerful cooling and heating operation for 15 minutes
continuously. The wireless remote control displays HIGH POWER mark and the FAN SPEED display disappears.
(a) During the HIGH POWER operation, the room temperature is not controlled. When it causes an excessive cooling and heating,
press the HI/ECO button again to cancel the HIGH POWER operation.
(b) HIGH POWER operation is not available during the DRY and the ON timer to OFF timer operations.
(c) When HIGH POWER operation is set after ON timer operation, HIGH POWER operation will start from the set time.
(d) When the following operation are set, HIGH POWER operation will be cancelled.
① When the HI/ECO button is pressed again.
② When the operation mode is changed.
③ When it has been 15 minutes since HIGH POWER operation has started.
④ When the 3D AUTO botton is pressed.
⑤ When the SILENT botton is pressed.
⑥ When the NIGHT SETBACK botton is pressed.
(e) Not operable while the air-conditioner is OFF.
(f) After HIGH POWER operation, the sound of refrigerant flowing may be heard.
Interface kit
(SC-BIKN2-E)
SW2-4
ON
OFF
ON
OFF
Operation mode
FAN
HEAT
65
-
Function
Enabled
Disabled
Disabled
Disabled
Jumper wire (J4)
-
Jumpre wire (J1)
'18 • SRK-T-234
Jumpre wire (J1)
Jumpre wire (J3)
Jumper wire (J172)
ON
OFF
Jumpre wire (J3)
5 7
Outdoor air temperature ( C)
0 0
R L F 5 0 5 A 1 0 2
Jumpre wire (J4)
Jumpre wire (J4)