York EVJC 12, Installation Instructions Manual

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(3) During the process of operation, if
Ǐ
T
low air-damper inlet temperature of Cooling
ǐ˘
T
outer ring
˘ Ǐ
T
high air-damper inlet
temperature of Cooling
ǐ
, then keep the former operation air damper;
(4) Cooling oil return control: when the outdoor fan runs 80s at a high speed, then regulate it by control logic
(the control whose priority level is higher than the air damper switch cycle about 80s)
2. When it begins to supply air, the outdoor fan will stop working.
3. Outdoor fan control logic at the mode of heating:
(1) If T
outer ring
≤
Ǐ
T
high air-damper inlet temperature of heating
ǐ
, the outdoor fan will run at a high speed;
(2) If T
outer ring
≥
T
high air-damper inlet temperature of heating
, the outdoor fan will run at a low speed;
(3) During the process of operation, if
Ǐ
T
high air-damper inlet temperature of heating
ǐ˘
T
outer ring
˘ Ǐ
T
low air-damper inlet
temperature of heating
ǐ
, then keep the former operation air damper;
(4) Defrosting control of heating:
a. Defrosting begins: When it stops 50s after entering into the defrosting compressor, the outdoor fan will
stop working.
b. Defrosting stops: The outdoor fan begins to work when leaving the defrosting compressor.
(5) Heating oil return control:
The outdoor fan regulates at the normal control logic.
(3) Four-way valve control
1. The mode of four-way valve control on Cooling, dehumidification and supplying air: closing;
2. The mode of four-way valve control on heating: getting power;
(1) Four-way valve power control by heating
a. Starts the machine for heating, and the four-way valve control will get power immediately.
(2) Four-way valve power turn-off control by heating
a. When getting the mode of heating for power off, heating for changing into others, the four-way valve will
cut the power after 2 min.
b. When all kinds of protection stops, the four-way valve will cut the power after delaying 4 min.
(3) Defrosting control of heating:
a. Defrosting begins: When it stops 50s after entering into the defrosting compressor, the four-way valve will
cut the power after 50s.
b. Defrosting stops: when leaving the defrosting compressor about 50s, the four-way valve will get the
power.
(4) Charging circuit control of outer engine aluminum capacitor
1. Charging control
(1) Charging begins: when receiving the order of power on or preheating the compressor, firstly go on the
charging control;
(2) Charging stops:
It will stop charging if the two following conditions:
a. The compressor’s preheating is closed for 30 min;
b. Changing for the power turn-off or supplying air mode for 10 min.
2. Capacitance short-circuit protection (short trouble of DC Power)
When pulling in charging relay 2s, if the DC Power busbar voltage is lower than 100v, then cut the charging
relay immediately; and carry on the above operation after 30s, if they are both capacitance short-circuit two
times, then has the DC Power short trouble, and can’t be resumed.
(5) PFC function control
1. Power frequency checking (suitable for Semi-active PFC control):
(1) When power-up 2s, continually checking that the 10 times Power Cycling fit for: 185 ms
˘
T
power
˘
215
ms, then we can confirm that the power frequency is 50 HZ, and control PFC according to the 50 Hz power
parameter.
(2) When power-up 3s, continually checking that the 10 times power cycling fit for: 151 ms
˘
T
power
˘
181
ms, then we can confirm that the power frequency is 60 HZ, and control PFC according to the 60 Hz power
parameter.
(3) If the power cycling T doesn’t meet the (1), (2) condition, and doesn’t have trouble at the normal situation,
we shouldn’t start PFC, but start the compressor normally. If it has the PFC trouble at the testing mode and
can’t be resumed, only be removed by cutting the power. Both of the compressor and PFC shouldn’t be
started.
5. The protection functions of controller
(1) Evaporator frozen-preventing protection function
At the mode of Cooling, dehumidifying:
Evaporator frozen-preventing protection function begins when starting the compressor 6 min.
Operation
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