Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual page 116

21 | Commissioning
Installer and user reference guide
116
The remote controller displays ...
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Operation parameters
For a stable operation of the unit, each of the following parameters should be in its
range.
Parameter Range
Suction superheat ̥ ≥ 10 K
(refrigeration)
Suction ≤18°C
temperature
(refrigeration)
Subcool ≥2 K
(if applicable) ≤5°C
Liquid temperature
of the capacity up
unit
(a)
Charge additional refrigerant until all parameters are within their range. See
4
refrigerant" [ 101].
Description
Check that:
▪ Power supply of indoor unit is turned
ON.
▪ The cable of the power supply cable is
not broken and connected correctly.
▪ The cable of the remote controller
(indoor unit) is not broken and
connected correctly.
▪ Fuses and circuit breakers on the
indoor unit PCB did not trip.
Root cause when Countermeasure
out of range
Incorrect selection Set the correct
of expansion valve target super heat
at refrigeration (SH) value of
side. showcase or
blower coil.
Lack of amount of Charge additional
refrigerant. refrigerant
Incorrect selection Set the correct
of expansion valve target super heat
at refrigeration (SH) value of
side. showcase or
blower coil.
Lack of amount of Charge additional
refrigerant in refrigerant
outdoor unit (in
case of high
suction
temperature,
≥18°C).
Lack of amount of Charge additional
refrigerant in refrigerant
outdoor unit (in
case of high
suction
temperature,
≥18°C).
CO₂ Conveni-Pack outdoor unit
(a)
.
(a)
.
(a)
.
"18 Charging
LRYEN10A7Y1+LRNUN5A7Y1
4P605460-1 – 2020.08