Electric Control Functions; Performance Index; Main Parts Introduction; Indoor Fan - York YKHC 18 Service Manual

Part7. Electric control functions

1. Performance Index

No.
1 Applicable Voltage Range
2
3 Working environment temperature

2. Main Parts Introduction

2.1 Indoor Fan

High speed and low speed.
Breeze speed for anti-cold air.
2.2 Outdoor Fan
High speed and low speed.
Remark : some model just have one speed.
2.3 Buzzer
2.3.1 It will buzz when its driving port in the main chip outputs high level.
2.3.2 It will buzz once when the main frame receives remote start-up signal.
2.3.3 It will buzz once for 1 second when receiving turn-off signal.
2.3.4 It will buzz for 0.5 second once receiving other signal.
2.4 Indicator
2.4.1 There are 4 indicators: operating indicator, timer indicator, water level warning indicator, defrosting
indicator and pre-heating indicator (wind-delivery indicator for cooling-only A/C).
2.4.2 LED indicates errors when protection is in effective.
2.5 Four-way Valve
It is controlled by relays.
2.6 Condensate Pump
It is controlled by relays.
Item
A/C Frequency
Index
165-253V~, 343-418V~
50Hz
-7°C- +45°C
13