SHERPA 275678A_1_18.pmd - Olimpia Splendid

GB
ALARMS SHOWN ON THE CONTROL PANEL OF THE EXTERNAL UNIT
4.2
4
The control panel of the external unit allows access to the alarms that should activate during the operation of the heat pump.
The operating light ref. 2 fig. 23 flashes in the event of a fault.
To do so, keep the pushbuttons and pressed simultaneously for 5 seconds.
The code of the last alarm will appear to the right hand side of the display while on the left side the alarm code will be shown.
With the arrows or to the right of the box, scroll the codes of the other 3 previous alarms.
To cancel the alarms press the
key.
To return to the normal operating position press the
key.
Symptoms and inspection points.
4.2.1
Alarms
displayed
Meaning
Condition for the
alarm signalling
Alarm interruption
conditions
Check and
connections
P03
Anomalous reflow
temperature
Reflow temperature > or =
to the limit temperature
The device stops the
moment that the
temperature exceeds
111°C
Interruption during restart
1. Check the refrigeration
cycle (for any leaks)
2. Defect of the pressure
regulator
3. Check the reflow
probe
P05
Phase absence detection
(CT disconnected or
defect in the power
supply)
The value of the intensity
of current sent by MDC to
the external board is low.
Lack of electric power for
3 or more minutes
Interruption during restart
1. Check the presence
and sequence of
phases R, S and T
2. Check the Inverter
board
3. Check the main
external board
P15
Insufficient cooling power
detected
1 minute of continuous
operation in the following
conditions:
- T° reflow of 95°C or
greater
- Opening of the electronic
pressure regulator at 480
Pas
- Value of the intensity of
current of MDC equal to
1.7 A (three-phase) or 1.0
A (single-phase) or less
Interruption during restart
Check the refrigeration
cycle (for any leaks)
P19
Blocked 4-way valve.
This warning appears after
the compressor has been
operating for 5 minutes.
T° exceeds 64°C and no
longer drops below 55°C
[min (E1, E2)] ≤ 10°C
T° of the internal
exchanger increases even
though it is in cold mode
[E2 ≥ 40°C]
Interruption during restart
1. Check the 4-way valve
2. Check the electrical
power supply of the 4-
way valve
3. Check the external
electronic board
P20
High pressure protection
activated due to an excess
of the C2 temperature in
cold mode.
The temperature exceeds
65°C and no longer drops
below 55°C or less
> 30 s of continuous
operation: the alarm is
displayed when the first
case occurs
< 30 s of continuous
operation: the Inverter is
stopped
Interruption during restart
1. Thermodynamic cycle
overheating
2. Check the C2
temperature probe
P22
External fan motor defect,
circuit protection
Inverter activated or
blocked on the external fan
motor
The Inverter stops after the
intervention of the alarm
Interruption during restart
1. Positioning defect
detected
2. Protection circuit
against overloading
due to overcurrent of
the external fan motor
activated:
- check the external
electronic board
- see the checking
method of the external
fan
SHERPA
55