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51
EN
1. Remote maintenance
Others
Possible causes of trouble
Heavy load condion
Loosen hold down bolts and /
or screws
Bad airproof
he air inlet or outlet of either
unit is blocked
Interference from cell phone
towers and remote boosters
Shipping plates remain
aached
Unit will not start
The power switch is on but fans will not start
The temperature on the display board cannot be set
Unit is on but the wind is not cold (hot)
Unit runs, but shortly stops
The unit starts up and stops frequently
Unit runs connuously but insufficient cooling (heang)
Cool can not change to heat
Unit is noisy
Test method / remedy
Check heat load
Tighten bolts or screws
Close all the windows and doors
Remove the obstacles
Reconnect the power or press ON/OFF buon
on remote control to restart operation
Remove them
8.4.2 Field maintenance
No.
Problem
1
Unit will not start
2
Compressor will not start, but fans run.
3
Compressor and condenser (outdoor) fan will not start.
4
Evaporator (indoor) fan will not start.
5
Condenser (Outdoor) fan will not start.
6
Unit runs, but it shortly stops.
7
Compressor short-cycles due to overload.
8
High discharge pressure.
9
Low discharge pressure.
10
High suction pressure.
11
Low suction pressure.
12
Unit runs continuously but with insufficient cooling effect.
13
Too much cooling effect.
14
Compressor is noisy.
15
Horizontal louver can not revolve.
Содержание HCNI 533
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Страница 16: ...16 3 4 Outdoor Units Printed Circuit Board Diagram HCNMX 353 HCNI 533...
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