1. Comparison between L – Series / K - series
By Kelvin Foo Yong Siang
Sales Engineer, OYLM

2. OPERATING MODES (K&L Series)
The system has 5 operating modes. The mode selection is done from indoor using handset.
The operating modes are:
Cool
Heat
Fan
Auto
Dry

3. THERMOSTAT CONTROL (K&L Series)
Cooling
-0.5C C
Fan speed
remains unchanged B
-2C
-2C A
0C
1.5C T
Heating A B
Fan speed changes to
lower rpm (300rpm) C

4. THERMOSTAT CONTROL (K&L Series)
OFF condition:
T falls in Zone A.
ON condition:
T is above Zone C after being in Zone A.
Unit resumes operation from defrost control.
Operation is turned ON in any zones except A.
The monitoring time has passed while T is in Zone B:
Cooling/dry mode – 10 minutes.
Heating – 10 seconds.

5. FAN MODE (K-Series) 7 fan setting buttons can be set using handset:
Silent, L, ML, M, MH & H, Auto, Powerful.
Silent is at LL step. FAN MODE (L-Series)
6 fan setting buttons can be set using handset:
Quiet, L, M, & H, Auto, Turbo.
Silent is at SL(SuperLow) step.

6. AUTO MODE (K&L Series) For heat pump only Mode switching point:
Heating  Cooling
Tr ≥ Ts + 2.5
Cooling  Heating
Tr ≤ Ts – 2.5
During initial operation
Cooling operation: Tr > Ts
Heating operation: Tr < Ts
Ts C
Thermostat OFF
Ts C
Ts C
Ts C
Heating
operation
Cooling

7. NIGHT SET MODE (K&L Series)
Cut in when OFF timer is set.
Maintain the air flow setting by user.
Cooling
0.5C
1 hour
2.0C
Heating
OFF timer
Night set circuit ON
Temperature
shift
Unit stops at the set hours

8. ECONO MODE (K&L Series)
Maximum power consumption is limited to 700W(Not Available in L-Series).
Can be activated while unit is running in Cool, Heat, Dry or Auto.
Once this function is activated, the input current upper limit is applied.

9. POWERFUL OPERATION (TURBO MODE- L-SERIES)
To set the unit to run in full capacity.
Indoor fan speed and compressor frequency is increased.
Fan speed and target set temperature will be adjusted as follows for a 20 minute duration:
Mode
Fan speed
Target Ts
Cool*
H + 80rpm
18C
Dry
L + 80rpm
Ts (dry) - 2.5C
Heat*
30C
Fan -
Auto
Same as *
Unchanged

10. General Comparison Compressor
Controller
Fan
Fan Motor
Similar for both Inverter K and Inverter L Series

11. Filter Comparison Inverter K – Titanium Apatite
Inverter L – Biofilter + Titanium Apatite

12. Power Comparison Inverter K – Power from Outdoor
Inverter L – Power from Indoor