Haier HDU-60CA03T3 Service Manual page 28

Commercial Air Conditioner
(4) For units with auxiliary electric heating:
a. If when defrosting condition is met, electric heating is working, the unit will stop electric heating firstly,
after 20 seconds, it will enter defrosting mode.
b. If before defrosting, auxiliary electric heating is on, then after defrosting, when auxiliary electric
heating condition is met, it will start up electric heating.
compressor
Indoor fan motor
Run at anti-cool air mode
Outdoor fan motor
4-way valve
Max:10min
55s
1min
55s
1min
2.6.10 Manual defrosting
When operation panel sends the manual defrosting signal, indoor and outdoor unit do not adjust the
defrosting condition and directly perform the defrosting function, its defrosting course is as the same as
the auto defrosting course. The quit condition is that the defrosting time is 5 minutes.
2.7 Sleep function
When the unit is in cooling, dehumidifying, or heating mode, sleep function can be set. In cooling or
dehumidifying mode, after in sleep mode for 1 hour, set temperature will arise 1℃, after a second 1 hour,
set temperature will arise a second 1℃, and continue working for 6 hours, the unit shut off.
Sleep sketch map in non-heating mode
Ts+2
Ts+1
T s
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