(7) Temperature compensation.
Auto temperature compensation condition: when reach temperature condition, cut-off
time of compressor is less than 5 minutes. Temperature compensation rules are as
follows:
When Ts+4-Tr≥2℃， ΔＴ＝２℃； when Ts+4-Tr=1℃， ΔＴ＝１℃；
When Ts+4-Tr≤0℃， ΔＴ＝０℃．
When heating mode starts for the first time, ΔＴ＝０℃．
With temperature compensation function, if push temperature increasing and decreasing
button on remote controller, ΔＴ＝０; if push temperature increasing button on remote
controller, ΔＴ will maintain previous value.
(8) Overcool protection in cooling.
In cooling, 9 minutes after the start of compressor, check room coil temperature. when
indoor coil temperature is less than 0℃，compressor and outdoor fan will stop running.
When the two following conditions are meet, compressor and outdoor fan will restart:
① Cut-off time is more than 3 minutes;
② Indoor coil temperature is more than 7℃．
(9) 3-minutes delay
When compressor stop running arose from transmitter OFF, ON-OFF or breakdown,
compressor will stop for 3-minutes.
(10) Overcharging protection in heating
Overcharging protection: in HEAT mode, if room coil temperature>56℃, outdoor fan will
stop running and resume when inner coil temperature ≤ 53 ℃ ；if room coil
temperature>68℃ and last 10 seconds, compressor and outdoor fan will strop running;
compressor and outdoor fan will resume normal operation when room coil
temperature<46℃．
Over-current protection: in HEAT mode, outdoor fan will stop running if working current
measured with current transformer is continuously more than 14A in 2 seconds; if current
is less than 13A, outdoor fan will resume operation; if working current is more than 26A
after a 5-minutes running and last 10 seconds, compressor will stop and resume normal
operation 3 minutes after; indoor fan will run on cool-air proof condition. If over-current
protection occurs twice in 30 minutes, compressor won’t restart any more. System will
turn into over-current fault alarm.
(11) Power failure compensation function.
Power failure compensation function will be set by remote controller. To cancel power
failure function, push SLEEP button 10 times in 5 seconds, buzzer will sound twice
"BEEP"; To set power failure function, push SLEEP button 10 times in 5 seconds, buzzer
will sound four times "BEEP".
When main panel has power failure compensation function, it will memorize running
parameter in the case of sudden power failure (not cut by remote controller), if unit didn’t
receive remote signal 3 minutes after power resume, it will call automatically memory
information and continue to run in previous state. Memory includes operation mode, fan
speed, set temperature, air door state, health; timing and sleep mode not included.
(12) Emergency switch and forced cooling.
Push down emergency ON/OFF button, buzzer will sound once "beep", release it 5
seconds after, unit will perform starting function; if ON/OFF button is pressed
continuously for more than 5 seconds, buzzer will sound twice "beep", and unit will
perform forced cooling function. Here operational mode is set as cooling, fan speed is set
as high; forced cooling will finish 30 minutes after. After having pushed down mode
button, fan speed button, temperature increasing and decreasing button, sleep button,
Domestic Air Conditioner
Model: HSU-24H03/Z
Model: HSU-24C03/Z
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