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

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

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

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.

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.

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 + 1.5 C Thermostat OFF Ts + 2.5 C Ts - 2.0 C Ts - 2.5 C Heating operation Cooling

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

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.

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

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

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

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