Blockage - REMEHA GAS 120 ACE Series User Manual

Code Display text
A02.36 Funct device lost
A02.37 Uncritic device lost
A02.45 Full Can Conn Matrix
A02.46 Full Can Device Adm
A02.48 Funct Gr Conf Fault
A02.49 Failed Init Node
A02.69 Fair mode active
A08.02 Shower Time Elapsed
Code Display text
H01.00 Comm Error
H01.05 Max Delta TF-TR
H01.08 CH Temp Grad. Level3
7717201 - v03 - 25062019
Description/Solution
Functional device has been disconnected:
Run a PCB auto-detect.
Bad connection: check the wiring and connectors.
Faulty SCB PCB: replace SCB PCB
Uncritical device has been disconnected:
Run a PCB auto-detect.
Bad connection: check the wiring and connectors.
Faulty SCB PCB: replace SCB PCB
Full Can Connection Matrix :
Carry out an auto-detect
Full Can Device Administration:
Carry out an auto-detect
Function Group Configuration Fault:
Carry out an auto-detect
Failed Initialising Node:
Carry out an auto-detect
Fair mode active
The time reserved for the shower has elapsed
11.2.2

Blockage

A (temporary) blockage is a status resulting from an abnormal state. The
error code is displayed in the main display and the LED for status
indication flashes red. The control unit makes a number of attempts to
restart. If the cause of blocking persists, the blockage will turn into a fault.
Press the
Important
If the cause of blocking is resolved, the system will restart
automatically.
Blocking codes CU-GH-08
Description/Solution
Communication Error occured:
Restart the boiler
Maximum difference between flow temperature and return temperature:
No flow or insufficient flow:
Check the circulation (direction, pump, valves)
Check the hydraulic pressure
Check the cleanliness of the heat exchanger
Sensor error:
Check that the sensors are operating correctly
Check that the sensor has been correctly fitted
Maximum CH temperature gradient level3 exceeded:
No flow or insufficient flow:
Check the circulation (direction, pump, valves).
Check the hydraulic pressure.
Check the cleanliness of the heating body.
Check that the installation has been correctly vented to remove air.
Sensor error:
Check that the sensors are operating correctly.
Check that the sensor has been fitted properly.
key to remove the warning from the main display.
MID _HMI T-control - Gas 120 ACE
11 Troubleshooting
81