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VARINO GRANDE 350 - 600
We reserve the right to make changes to dimensions and construction 27 Edition 10.07.2015
© Copyright YGNIS AG CH-Ruswil
9.9. Help in the event of errors
ATTENTION: Opening the casing and manipulating the electrical connections is EXTREMELY DANGEROUS!
The mains fuse must be switched off before the front cover is removed.
WARNING: Due to external connections on the boiler control panel, individual cables or components on the
VARINO GRANDE condensing unit can still be live even when the mains fuse is switched off.
9.9.1. No error code in the display
Unit is cold, the VARINO GRANDE condensing unit is not in operation, no error code is shown in the display.
Status display: First figure = 0
Meaning: The condensing unit has no heat requirement and therefore no start command.
Possible cause: Ygnis heating controller (if present):
The heating controller is set to summer operation or switched off.
The operating instructions of the heating controller provide information on the
individual functions and applications of the heating controller.
External control with heating controller:
- the external heating controller should be checked.
- The heating curve may be set too low
Further procedure: Check cause, unit will start automatically when required.
Status display: First figure = 8
Meaning: Gas pressure monitor input is open
Possible cause: - The gas pressure is inadequate
- The gas cock is closed
- External safety gas valve is defect.
- The external mechanical ventilation does not work or builds up too little
pressure.
Further procedure: Check cause, unit will start automatically when required.
Status display: First figure = A
Meaning: The condensing unit is switched off
Possible cause: Fault lamp "external faults" lights up:
- The neutralisation set connected to the boiler control panel is overfull (if
present),
- external safety devices connected to the boiler control panel (e.g. water
shortage fuse, minimum/maximum pressure monitor, or external STB’s) have
been triggered.
Further procedure: The cause is not related to the condensing unit. After remedy of the external
cause the unit will start again without actuating the RESET button. A 5 minute
ventilation period will precede the start.
Possible cause: Fault lamp "external faults" does not light up:
- The burner switch on the control panel is switched OFF
- The maximum temperature set on the temperature monitor has been exceeded.
Further procedure: Check cause, unit will start automatically when required.
Possible cause: Fault lamp "sealing control" is lit (only when a sealing control has been optionally
added to the gas block):
- The gas supply is closed
- A leak has been found at one of the two gas valves of the gas block.
Further procedure: After the cause has been checked, the fault message must be acknowledged
with the "sealing control" release key. If the device still does not start after
acknowledgement has been made several times, the customer service must be
informed.
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