Hyundai HSH-121NBE, Service Manual

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5
5
.
.
C
C
O
O
N
N
T
T
R
R
O
O
L
L
M
M
O
O
D
D
E
E
L
L
3 ×
★ ★
Frequency descent or restriction on frequency ascent
caused by anti-freeze in cooling or overload control in
heating
4
★
×
★
Frequency descent or restriction on frequency ascent
caused by too high compressor discharge temperature
5
×
★
×
Restriction on maximum operation operating frequency
caused by too low voltage on the supply circuit
6 ★ ★ ★ Operating at a fixed frequency (when in a capacity
measurement or forced operation at a fixed frequency.)
8 ★
× ×
Communication frequency drops.
5-3-12 Special notes
5-3-12-1 The outdoor unit of this model is electrified by the indoor unit control. After the system
starts to operate, the indoor unit supplies the outdoor unit (except for the ventilation mode). If
the EEPROM data is read correctly after turning on the power, the indoor unit’s beeper rings
one time, or if it is not the case the beeper will ring two times and the system cannot be started.
Normally, when the indoor unit receives a control signal from the remote controller and
emergency button, the system will be started and the beeper will ring two times, and in other
cases, the beeper will ring one time.
5-3-12-2 This model can achieve the power interruption restoration function by the selection of
the EEPROM data. The power interruption restoration is applied only for the basic functions
(turning ON and OFF, setting temperatures, modes, fan speeds and flap’s position) and not for
other special functions such as sleep, timing and power-saving run.
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