Monobloc Outdoor Unit Service Manual
59
#
Override
Conditions
Action
50
Minimum OAT in Cooling
Cool Mode and TO2 [P039] is below
“oat_minc” parameter ([P516], default
is 0°C) for 15 min.
Do not allow the start. Stop unit if
already running.
51
Minimum EWT in Cooling
EWT is strictly below 6°C + offset.
With offset increased of 2K each time
alarm #50 or #51 occurs.
Do not allow the start
52
Low OAT in Cooling
Units Heat pump17 and Heat pump21,
Cool Mode and TO2 [P039] is (strictly)
below 15°C.
Increase minimum compressor
frequency to 35 Hz (17 kW) or 50 Hz
(21 kW)
53
OAT above 26°C in Cooling
Units 17 and 21 kW, Cool Mode and
TO2 [P039] is above 26°C.
Increase minimum compressor
frequency to 25 Hz (17 kW) or 36 Hz
(21 kW)
54
OAT above 40°C in Cooling
Units 17 and 21 kW, Cool Mode and
TO2 [P039] is above 40°C.
Reduce compressor frequency
range between 45 and 70 Hz.
55
Low SST avoidance
Units Heat pump17 and Heat pump21,
Cool Mode, TO2 ≤ 26°C and LWT ≤
9°C.
Increase minimum compressor
frequency to 45 Hz (Heat pump17)
or 50 Hz (Heat pump21)
58
Water Exchanger Freeze
Protection in Cooling
Cool Mode and SST is below 0°C.
Freeze compressor request
frequency
69
Negative OAT in Cooling
Chiller units, Cool Mode and TO2 <
0°C.
Increase minimum compressor
frequency (63 Hz for Chiller17 and
77.4 Hz for Chiller21). A 0.1Hz/s
ramp is applied.
70
Water Flow Failure
Water is not flowing through the water
exchanger.
Stop compressor
85
Compressor stopped by the
Inverter
Compressor was running for at least 3
minutes and Inverter stop it.
Stop compressor control if override
is active for more than one minute
90
Booster Heating
Booster Heating Mode selected.
Run compressor at the
maximum frequency in Heat
Mode
91
Booster Cooling
Booster Cooling Mode selected.
Run compressor at the maximum
frequency in Cool Mode
100
System Alarm
Alarm relative to the unit or the system Compressor is stopped immediately or
is not allowed
to start
101
Compressor or
Inverter Alarm
Alarm relative to the Inverter or the
compressor
Compressor is stopped
immediately or is not allowed to start
102
Configuration
Error (Factory)
No or wrong configuration
Compressor is not allowed to start
201
Rating Cool
QCK_TEST enabled,
RAT_MODE = 1 and
RAT_FREQ = desired freq
Run compressor at the
requested frequency in Cool
Mode for test purpose
202
Rating Heat
QCK_TEST enabled,
RAT_MODE = 2 and
RAT_FREQ = desired freq
Run compressor at the requested
frequency in Heat
Mode for test purpose
203
Ramp Cool Mode
QCK_TEST enabled,
RAT_MODE = 3 and
RAT_FREQ = rate (Hz/min)
Run compressor by ramping up or
down the frequency in Cool Mode for
test purpose
204
Ramp Heat Mode
QCK_TEST enabled,
RAT_MODE = 4 and
RAT_FREQ = rate (Hz/min)
Run compressor by ramping up or
down the frequency in Heat Mode for
test purpose
Содержание Estia RUA-CP1701H
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