Outdoor Units - Sinclair ASH-18AIM2 PT Service Manual

3. Protecting Treatments of Thermo-bulb:
When the thermobulb is detected to be short-circuited continuously for 5 seconds: It is regarded that the temperature detected by the
thermo-bulb is over-high (or unlimited), then the whole machine will exert corresponding safety stops according to the over-high temperature
sensed by the thermo-bulb, and display corresponding temperature safety stops and faults of the thermo-bulb simultaneously.
When the thermo-bulb is detected in open circuit continuously for 5 seconds: stop the machine in protection, directly display corresponding
faults of the thermo-bulb.
(13) Refrigerant recycling function (applicable when changing installation location or in maintenance)
1. Enter refrigerant recycling function
Within 5min after energizing (unit ON or OFF status is ok), continuously press LIGHT button for 3 times within 3s to enter refrigerant
recycling mode; Fo is displayed and refrigerant recycling function is started. At this moment, the maintenance people closes liquid valve.
After 5min, stick the thimble of maintenance valve with a tool. If there is no refrigerant spraying out, close the gas valve immediately and
then turn off the unit to remove the connection pipe.
2. Exit refrigerant recycling function
After entering refrigerant recycling mode, when receive any remote control signal or enter refrigerant recycling mode for 25min, the unit will
exit refrigerant recycling mode automatically If the unit is in standby mode before refrigerant recycling, it will be still in standby mode after
finishing refrigerant recycling; if the unit is in ON status before refrigerant recycling, it will still run in original operation mode.
(14) Compulsive Defrosting Function
1. Start up compulsory defrosting function
Under ON status, set heating mode with remote controller and adjust the temperature to 16℃ . Press "+, -, +, -, +,-" button successively
within 5s and the complete unit will enter into compulsory defrosting status. Meanwhile, heating indicator on indoor unit will ON 10s and OFF
0.5s successively. (Note: If complete unit has malfunction or stops operation due to protection, compulsory defrosting function can be started
up after malfunction or protection is resumed.
2. Exit compulsory defrosting mode
After compulsory defrosting is started up, the complete unit will exit defrosting operation according to the actual defrosting result, and the
complete unit will resume normal heating operation.

Outdoor Units

1. Input Parameter Compensation and Calibration
(1) Check the ambient temperature compensation function Indoor ambient temperature compensation function.
a. In cooling mode, the indoor ambient temperature participating in computing control = (T
)
compensation
b. In heating mode, the indoor ambient temperature participating in computing control= (T
)
compensation
(2) Check effective judgment controls of parameters
Effective judgment function of the outdoor exhaust temperature thermo-bulb When conditions a and b are satisfied, the outdoor exhaust
temperature thermo-bulb is judged not to be connected into place, the mainboard of outer units will display failure of the outdoor exhaust
temperature thermo-bulb (not connected into place), stop the machine for repairing, and resume the machine by remote controls of ON/OFF.
a. Judgment of exhaust detection temperature change:
After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥ 40Hz, and the rising value Texhaust (T
up for 10 minutes) exhaust (before start-up)
- T
once when the power is on the first time).
b. Comparative judgment of exhaust detection temperature and condenser detection temperature (T
= T
pipe temperature indoor pipe temperature in heating mode
, T
mode
≥(T
pipe temperature
40Hz, and T
once when power is on the first time).
2. Basic Functions
(1) Cooling Mode
1. Conditions and processes of cooling operation:
(1) If the compressor is shut down, and [Tsetup – (T
for cooling, the cooling operation will start;
(2) During operations of cooling, if 0ºC ≤ [Tsetup – (T
will be still running;
(3) During operations of cooling, if 2ºC ≤ [Tsetup – (T
stop after reaching the temperature point.
20
) < 2ºC , the outdoor exhaust temperature thermo-bulb can be judged not to be connected into place (judging
): After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥
), the outdoor exhaust temperature thermobulb can be judged not to be connected into place (judging
exhaust+3
indoor ambient temperature
indoor ambient temperature
indoor ambient temperature
indoor ambient temperature
indoor ambient temperature
– ⊿ T
cooling indoor ambient temperature compensation)
– ⊿ T
cooling indoor ambient temperature compensation)
– ⊿ T
cooling indoor ambient temperature compensation)
Service Manual
– ⊿ T
cooling indoor ambient temperature
– ⊿ T
heating indoor ambient temperature
exhaust (after start-
= T
pipe temperature outdoor pipe temperature in cooling
] ≤ 0.5 , start up the machine
] < 2 , the cooling operation
], the cooling operation will
Technical Information