Dettson COND-09-01, Installation Instructions And Homeowner'S Manual

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38
Malfunction’s
name
Display method of
Outdoor Unit (indicator
has 3 kinds of display
status and they will be
displayed circularly every
5 s.)
A/C Status Possible Causes
□
= OFF
■
= Illuminated
= Blink
D5
(D40) D6
(D41) D16
(D42) D30
(D43)
dropping for DC
bus-bar
Voltage of DC
bus-bar is too
low
□ ■ ■ □
During operation, the complete
unit stops.
1- Measure the voltage of
position L and N on wiring
board (XT), if the voltage is
higher than 150VACm turn on
the unit after the supply
voltage is increased to the
normal range.
2- If the AC input is normal,
measure the voltage of
electrolytic capacitor C on
control panel (AP1), if it is
normal, there is malfunction
for the circuit, please replace
the control panel (AP1).
Limit/decrease
frequency due
to high
temperature of
module.
■ ■ ■
During operation, the complete
unit stops.
Discharging after the complete unit
is de—energized for 20 minutes,
check whether the thermal grease
on IPM module of outdoor control
panel AP1 is sufficient and whether
radiator is inserted tightly. If it is no
use, please replace the control
panel AP1.
The four-way
valve is
abnormal
■ □ □
If this malfunction occurs during
heating operation, the complete
unit will stop operation.
1- Supply voltage is lower
than AC 175V;
2- Wiring terminal 4V is
loosened or broken;
3- 4V is damaged, please
replace 4V.
Zero-crossing
malfunction of
outdoor unit
■ ■ □
During operation, the complete
unit stops.
Replace outdoor control panel AP1.
Limit/ intérieure
ou la vitesse du
ventilateur est
trop basse.
decrease
frequency due
to anti-freezing
■ ■ ■ □
All loads operate normally while
operation frequency for
compressor is decreased.
Poor air-return in indoor unit or fan
speed is too low.