Midea MCA3U-09HRFN1-M(C) User Manual

182
---Compressor discharge temp. T5>115 ℃
(239°F) for 5s, compressor stops and restarts
up till T5<90℃(194°F)
---110<T5<115℃(239°F), decrease the
frequency to the lower level every 2 minutes.
---105(221°F)<T5<110℃(230°F), keep running
at the current frequency.
----T5<105℃(221°F), no limit for frequency.
16.3.4 Fan speed malfunction
When indoor fan speed keeps too low (lower
than 300RPM) for 50s, the indoor fan will shut
off and restart 30s later, if protection happened
3 times when fan motor restarts continuously,
the unit will stop and the LED will display the
failure.
When outdoor fan speed keeps too low (lower
than 100RPM) or too high (higher than
1500RPM) for 60s, the unit will stop and the
LED will display the failure. Malfunction is
cleared 30s later.
For A6 Duct& HESP Duct:
If a fault occurs on the air volume regulator or
the regulator enters protection mode, it sends
the error message CF and an instruction to
reduce fan speed to the master. The message
and the instruction can be inquired with the
remote controller or the wired controller. (Fault
and protection information are displayed for
one minute). After a fault occurs, the master
unit shows the error code E3 and the fault count
for one minute. If the fault occurs three times,
then the fan is unable to resolve the problem
independently. External shutdown by a remote
controller, wired controller, or central controller
must be used to clear the fan fault and fault
count. The fan runs normally for 5 minutes
while clearing fault count.
0: No malfunction
1:P0 Overcurrent
2:Overpressure
3:Overload
4:Overspeed
5:Startup malfunction
6:Lack of phase
7:DC voltage too low
8:Communication fault
9:Parameter fault
10:L3 Current limited
11:L5 Voltage limited
12:Target speed cannot be met during the
static pressure calculation process.
16.3.5 Inverter module protection
The Inverter module has a protection function
about current, voltage and temperature. If these
protections happen, the corresponding code
will display on indoor unit and the unit will stop
working.
16.3.6 Indoor fan delayed open function
When the unit starts up, the louver will be active
immediately and the indoor fan will open 7s
later.
If the unit runs in heating mode, the indoor fan
will be also controlled by anti-cold wind
function.
16.3.7 Compressor preheating functions
Preheating permitting condition:
If T4＜3℃(37.4°F) and the machine connects
to power supply newly within 5 seconds or if T4
＜3℃(37.4°F) and compressor has stopped for
over 3 hours, the compressor heating cable will
work.
Preheating mode:
A weak current flow through the coil of
compressor from the wiring terminal of the
compressor, then the compressor is heated
without operation.
Preheating release condition:
If T4≥5 ℃ (41°F) or the compressor starts
running, the preheating function will stop.

Midea MCA3U-09HRFN1-M(C) Specifications

General

Brand	Midea
Model	MCA3U-09HRFN1-M(C)
Category	Air Conditioner
Language	English