Operating Faults - emmeti EQ 2018 Manuel D'installation Et D'utilisation

8. OPERATING FAULTS

Error indicators
When there is a problem an error code is displayed.
If there is more than one anomoly press the
through the list. When the problems have been resolved, the unit will start
to function correctly again.
If the display LCD is in low energy mode (the display is not illuminated) and
there is a problem, the display will not illuminate. To illuminate the display
press any key once.
If no key is touched, after about 1 minute the display dims to save energy.
Operating faults
Terminal
Display
block
P01 AI02/GND Accumulator temperature sensor (sen-
sor BTT)
P02 AI03/GND Upper accumulator temperature sensor
(sensor TTT)
P04 AI01/GND Air temperature sensor
(sensor AT)
034p AI06/GND Solar panel temperature sensors (sen-
sor STT)
P05 AI04/GND Evaporator temperature sensor (sen-
sor CT)
P07 AI05/GND Compressor suction temperature sen-
sor (SUT sensor)
E01 DI04/GND High pressure protection
E02 DI03/GND LP Protection
E04 DI02/GND Bridge
E08 NET Communication with controller error
or keys to scroll
Malfunction
The BTT temperature sensor is broken
(open circuit or short circuit)
The TTT temperature sensor is broken
(open circuit or short circuit)
The AT temperature sensor is broken
(open circuit or short circuit)
The STT temperature sensor is broken
(open circuit or short circuit)
The CT temperature sensor is broken
(open circuit or short circuit)
The SUT temperature sensor is faulty
(open or short circuit)
The high pressure switch has been
activated
The jumper is disconnected (the circuit
is open)
The bridge is broken or has become
detached from the terminal blocks
LCD display disconnected
Cause
Check and/or change the sensor
Check and/or change the sensor
Check and/or change the sensor
Check and/or change the sensor
Check and/or change the sensor
Check and/or change the sensor
Check the high pressure switch and the
return circuit
Check the jumper (close the contact)
Check the bridge between the terminal
blocks and/or replace it
Check that the LCD is connected cor-
rectly (blue wire)
GB GB
Solution
67