TCL Air Conditioner Service Manual
15 
4). Set other function as MODE, FAN SPEED, SWING etc. 
5). Press TIMER ONCE AGAIN to confirm the TIME ON setting   
 
TIMER OFF 
1). TIMER OFF can be set only when the air conditioner is ON. 
2). Press TIMER on the remote control ONCE to enter time setting. 
3). Press “▲” or “▼” to set the time for unit to stop working. 
4). Press TIMER ONCE AGAIN to confirm the TIME OFF setting   
 
Note: In case of no selection for the time setting within 10s, the timer function will be OFF automatically. 
 
4.1.7 Sleeping mode 
While  AC  works  in  sleeping  mode,  the  light  of  POWER  SUPPLY  and  SLEEP  always  ON,  and  the  temperature 
display will be OFF after 15s. 
In this mode, the AC unit works according to the SLEEP CURVE as designed.   
Sleeping mode the unit can work 10 hours continuously, after that it will quit from this mode and work as previous 
presetting. 
 
4.1.8 Emergency switch 
When the EMERGENCY switch is pressed one time, COOLING mode is selected and if  it  pressed  again within 3s, 
HEATING mode  selected,  while  press once again, the unit will be switched off. 
When  the  remote  controller  out of function,  batteries  lost  power,  for  example,  the  EMERGENCY button in the 
front of indoor unit can be used for function test. 
 
NOTE: Do not press the EMERGEMCY switch during normal operation. 
 
4.1.9 Auto-restart function 
While air conditioner is operating in one mode, all of its operation data, such as working mode, preset temperature 
etc.  would  be  memorized  into  IC  by  main  PCB.  If  power  supply  cut  off  due  to  reasons  and  recover  again,  the 
AUTO-RESTART  function  will  set
 
synchronously and the air conditioner would work at the same mode as  before. 
 
Note: The function setting: 
Within 3 min while power on unit, set the unit on cooling mode, set temperature 30℃, and mid fan speed, press the 
ECO button 10 times within 8s, the AUTO-RESTART will be activated.   
 
4.1.10 Protection 
4.1.10.1 Overload protection 
1. Overload protection for Cooling or Dry mode 
1). if: 
a. OPT≥62℃, unit stops working for overload protection. 
b. OPT<55℃, after compressor stopped for 3 min, can the unit be started to operate.   
2). When OPT≥55℃, the compressor will be frequency limited/reduced for over load protection. 
3). If unit have 6 times of over load stop-working protection continuously, this protection can’t be recovered unless 
press ON/OFF button, and unit will show failure code.   
In  the  process  of  operation,  once  the  compressor  runs  continuously  more  than  6  min,  the  counter  of  over  load 
stop-working protection will be reset to zero and start a new counting process.   
The  failure  and  times  for  protection  will  eliminate  immediately  once  the  unit  to  be  switched  off,  on  fan  mode  or 
changed to be heating mode from others.   
 
Note: If the defective failure can’t be recovered, the failure can’t eliminate even if operation mode changed.   
 
2. Overload protection for Heating mode 
1). If: 
a. IPT≥62℃, unit stops working for overload protection.   
b. IPT<55℃, after compressor stopped for 3 min, can the unit be started to operate. 
2). When IPT≥55℃, the compressor will be frequency limited/reduced for over load protection.   
3). If unit have 6 times of over load stop-working protection continuously, this protection can’t be recovered unless 
press ON/OFF button, and unit will show failure code.   
In  the  process  of  operation,  once  the  compressor  runs  continuously  more  than  6  min,  the  counter  of  over  load 
stop-working protection will be reset to zero and start a new counting process.