York Floor Ceiling R-410A 50Hz Service Manual download pdf (Page 300)

Controller

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14. CN3―PUMP

220 V output. When indoor unit starts to cooling operation, the pump starts at once and

running continue until stopping this mode. At any time, if the water-level in the water receiver

raises to the position point of the water-level switch, that is, the water-level switch signal is cut

down, the pump will start at once and forced running. If the water level falls to below the alarm

water-level (the drain pump delay 1 minute to be off), operation recovers according to former

setting mode. On the otherwise, after 3 minutes, indoor unit stops (Including pump) and display

water-level alarm signal, and indoor unit takes part in the whole system operation according to

standing-by mode. When again checking the water-level alarm signal is off, the protection will

be released and recover operation according to former setting.

15. CN2―Power input 220V (L, N)

16. CN4―Indoor Fan output

220 V output. There are four relays in the electric control board and four-speed output

(High/Middle/Low/breeze). The Low speed and Breeze speed have been short-connected, and

the indoor breeze speed have been deleted, so even the relay of breeze speed suck-in, the

indoor fan motor still operates in Low speed. That is, all indoor units have only three fan speeds;

even operate in Low speed in heating anti-cooling and oil-return period

17. CN11―Transformer output (TRANS OUT)

16 V AC output. Input 220V AC to transformer, then output 16V AC, and then input to the

electric board. There are two commute filter circuits, one is 7805, output 5V to the chip, the

other one is 7812, output 12V to 2003 and relays.

18. CN5―Water-level switch (WATER)

Disconnect when full of water and be close when water level recovers normal. For indoor

units without water-level switch, this switch needs be short connected.

19. CN7―Evaporator outlet temp. (T2B)

20. CN6―T1, T2

21. S2 ―Address setting (for CCM)

This setting presents the address relative to a CCM, match with S1 switch, the address range

is 0-63, Before using a CCM to group control indoor units or using YDS Intelligent Network Air-

Condition Control& Monitor System to control indoor units, the address setting must be finished

and the address setting of indoor units that match with the same CCM can’t be repeated.

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TECHNICAL SERVICE MANUAL 1
Part I General Information 5
Contents 18
Part 3 Outdoor 27
YDS-100WC15/35 50
YDS-140WC15/35 50
A 624 1030 52
B 55 52
C 1030 52
Part 4.1 Four-way cassette 72
Piping: 8m (horizontal) 79
Notes: 80
YDS-28-80KC 230 170 89
YDS-90-140KC 300 190 89
Indoor unit H(mm) 90
YDS-28-80KC ≥260 90
YDS-90-140KC ≥300 90
YDS-22-56GC ≥280 90
- 100 101
- 101 102
Part 4.2 Wall Mounted 103
- 103 104
- 104 105
- 105 106
- 106 107
- 107 108
3. Capacity table 109
- 109 110
- 110 111
- 111 112
- 112 113
- 114 115
- 115 116
- 116 117
- 117 118
YDS-45-56EC/HC 119
- 119 120
- 120 121
- 121 122
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- 150 151
Part 4.4 Medium ESP Duct 152
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Part 5 Installation 240
- 240 241
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Gr ounded wi r e 281
- 281 282
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- 286 287
- 287 288
Part 6 Control System 289
- 289 290
- 290 291
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Form No. 035M00457-000 385
2009 Johnson Controls, Inc 385

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York Floor Ceiling R-410A 50Hz Service Manual Page 300

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