Mark HCNI 533, Technical Manual

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from -2°C to 2°C. The default value is 0.
•
When T1-Ts <
∆
T5-2°C, the compressor ceases operation.
• When T1-Ts >
∆
T5+3°C, the compressor continues operation.
• When the AC is operating in mute (silent) mode, the compressor operates at a low frequency.
• When the current exceeds the preset value, the current protection function activates and the
compressor ceases operation.
Indoor Fan Control
• In cooling mode, the indoor fan operates continuously. The fan speed can be set to high,
medium, low, or auto.
• If the compressor ceases operation when the configured temperature is reached, the indoor fan
motor operates at the minimum or configured speed.
• The indoor fan is controlled as below:
Setting fan speed Actual fan speed
H+ (H+ = H+G)
M+ (M+ = M + Z)
H- (H- = H-G)
A
H (H = H)
B
C
D
E
F
G
H
I
M (M = M)
L+ (L+ = L+D)
L- (L- = L - D)
H
M
L
T1-Td °C
M- (M- = M - Z)
L (L = L)
T2
Setting fan speed
H
M+
M
L
Super slow
Fan off
TEL0
TEL0
+23 -
∆
TE1
TEL0 +21 - ∆ TE1
TEL0
+19 -
∆
TE1
TEL0 +17 - ∆ TE1
TEL0
+15 -
∆
TE1
TEL0 +13 - ∆ TE1
TEL0 +18 - ∆ TE1
TEL0 +16 -
∆
TE1
TEL0 +14 - ∆ TE1
TEL0 +12 -
∆
TE1
TEL0 +10 - ∆ TE1
• The auto fan acts as below rules:
Outdoor Fan Control
• The outdoor unit will be run at different fan speed according to T4 and compressor frequency.
• For different outdoor units, the fan speeds are different.
Condenser Temperature Protection
When condenser temperature is higher than setting value, the compressor ceases operation.
Evaporator Temperature Protection
When evaporator temperature drops below a configured value, the compressor and outdoor fan cease
operation.
4.3.4 Heating Mode
Compressor Control
Heating temperature compensation (
∆
T3) is a well-setting parameter of EEPROM. Its value ranges
from -6°C to 6°C.
•
When T1-Ts > -
∆
T3, the compressor ceases operation.
• When T1-Ts < -
∆
T3-1.5°C, the compressor continues operation.
• When the AC is operating in mute (silent) mode, the compressor operates at a low frequency.
• When the current exceeds the preset value, the current protection function activates and the
compressor ceases operation.
Indoor Fan Control
• When the compressor is on, the indoor fan speed can be set to high, medium, low, or auto.