Daikin SUPER MULTI NX G Series Service Manual

SiUS12-928_B Control Specification
Function and Control 62
3.10 Defrost Control
Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat
exchanger temperature must be more than a certain value to finish.
Detail Conditions for Starting Defrost
 The starting conditions are determined with the outdoor temperature and the outdoor heat
exchanger temperature.
 The system is in heating operation.
 The compressor operates for 6 minutes.
 More than A minutes of accumulated time pass after the start of the operation, or ending the
previous defrosting.
Conditions for Canceling Defrost
The target heat exchanger temperature as the canceling condition is selected in the range of
39.2 ~ 53.6°F (
4 ~ 12°C) according to the outdoor temperature.
18 class: The pulses E and F are the same.
18 class 24/32 class
A (minutes) 43 38
B (Hz) 54 39
C (Hz) 82 62
D (seconds) 30 60
E (pulses) 450 350
F (pulses) 450 400
G (pulses) 140 160
Frequency
Compressor
Four way valve
Fan
ON
OFF
ON
OFF
ON
OFF
0 Hz
B Hz
5 sec.
F pulsesE pulses450 pulses
Initial opening
0 pulse
G pulses
Initial opening
PI control
5 sec.
D sec.60 sec.
530 sec.
120 sec.
(R17363)
C Hz
Outdoor electronic
expansion valve
opening (operating
room)
Outdoor electronic
expansion valve
opening (stop room)

Daikin SUPER MULTI NX G Series Specifications

General

Brand	Daikin
Model	SUPER MULTI NX G Series
Category	Air Conditioner
Language	English