Haier N Series Service Manual page 17

temperature control precision: ±1℃
compressor can't be controlled by temperature sensor within 2 minutes after it starts.
control character: when Tr ≥ Ts, outlet air from compressor is on and indoor fan motor run at fixed wind speed.
When Tr< Ts, outlet air from compressor is off , and when Tr > Ts, outlet air from compressor is on.
wind speed control: (the temperature difference is 1℃)
auto: when Tr≥ Ts+3℃, the wind speed is high;
When Ts+1℃ ≤Tr< Ts+3℃, the wind speed is medium.
When Tr<Ts+1℃, the wind speed is low.
When temperature sensor is off, the fan motor runs at low speed.
when the wind speed changes from low to high, there is no delay, and when it changes from high to low, there is a
3-minutes delay before conversion.
Manual operation: When unit is on the wind speed can be set to high, medium, low or automatic as required
(execute instruction 2 seconds later after receiving remote signal)
Compressor control:The compressor can't be controlled by temperature sensor within 2 minutes after start up and
can be only restarted at least 3 minutes later after shutdown. There is no 3-minute protection with power on for the first
time (over 3 minutes with power off). The compressor must stands by for 3 minutes before it is restarted after shut
down.
There is no 2-minute limit when changing the temperature setting or shutting down the machine through the
remote controller, and the machine can be shut down immediately.
Avoiding electrical shock: outlet air is available 2 seconds later after startup.
High temperature expiration protection:
(1)High temperature expiration prevention: When the temp. of coil pipe is above 72℃,compressor and outlet air
stop running 10 seconds later, and inlet air runs as the temp. sensor is off. When compressor stands by for 3 minutes
and the temp. of coil pipe is below 65℃, the unit can be started again.
Protection of frost is available (disable in test run or heating mode): In order to prevent the indoor heat exchanger
from freezing (in refrigeration or dehumidifying mode), the compressor will be shut off when the temperature of the
indoor coil pipe is or below 0℃ and the compressor runs for over 5 minutes. When the temperature of the indoor coil
pipe ascends to over 7℃, the compressor is restarted (must meet a 3-minutes delay)
Timer on, Timer off and sleep control are available.
7.1.4 Dehumidifying mode：
Temperature control range : 16 ℃ ---30℃
Control character:
When Tr (indoor temperature) > Ts (temperature setting) +2℃, compressor and outdoor fan motor run
continuously with indoor fan motor running in accordance with the wind speed setting(State 1).
When Ts ≤ Tr ≤ Ts +2℃, outlet air from compressor is on for 10 minutes and off for 6 minutes, the indoor fan motor
is off in 3 minutes after shut down of compressor and gives breeze in other time(State 2).
When Tr < Ts, outlet air from compressor is unavailable, and the indoor fan motor enter breeze mode 3 minutes
later after shut down of compressor(State 3).
15
Functions and Control
Domestic air conditioner