Blocking code
Description
Maximum difference between the flow and return temperature exceeded:
No flow or insufficient flow:
Check the flow (direction, pump, valves)
Check the water pressure
Check the cleanliness of the heat exchanger
Sensor error:
Check that the sensors are operating correctly
Check that the sensor has been fitted properly
No release signal:
External cause: remove external cause
Parameter error: check parameters
Bad connection: check the wiring
Phase and neutral of mains supply mixed up:
The mains connection is wired incorrectly: invert phase and neutral
Floating network or 2-phase network: set parameter
to
Blocking input is active:
External cause: remove external cause
Parameter error: check parameters
Bad connection: check the wiring
Blocking input active or frost protection active:
External cause: remove external cause
Parameter error: check parameters
Bad connection: check the wiring
Communication error with the SCU PCB:
Bad connection with BUS: check the wiring
SCU SCU PCB not present in boiler: carry out automatic detection
Water pressure too low:
Water pressure too low:
Check the water pressure
Fill the boiler and the installation with water
Gas pressure too low:
No flow or insufficient flow:
Check that the gas valve is fully opened
Check the gas supply pressure
Wrong setting of GPS gas pressure switch on the SCU PCB:
Check whether the Gps has been correctly fitted
Replace the Gps switch if necessary
Configuration error or SU PCB not recognised:
Wrong SU PCB for this boiler: replace the SU PCB
Configuration error or default parameter table incorrect:
Parameter error in the PCU PCB: replace the PCU PCB
Configuration error or PSU PCB not recognised:
Wrong PCU PCB for this boiler: Replace the PCU PCB
Configuration error or parameters
and
unknown Reset
and
Configuration procedure active:
Active for a short time after switching on the boiler: no action
Communication error with the SU PCB:
Bad connection: Check whether the PCU PCB has been correctly fitted in the connector on the SU
PCB
11 Troubleshooting
70
123157 - v.12 - 07022018
Содержание Quinta Pro 115
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