Operating Instructions and Installation Instructions

VARINO GRANDE 350 - 600
We reserve the right to make changes to dimensions and construction 28 Edition 10.07.2015
© Copyright YGNIS AG CH-Ruswil
Status display: Alternating display "noO2"  standard display
Meaning: Failure of the O
2
control.
Possible cause: O
2
sensor defective
- The condensing unit continues to run in emergency mode for max. 72 hours.
After this time has expired, the unit shuts down.
- The safety block can only be released after the cause has been eliminated.
Further procedure: Inform the customer service and indicate the error code as well.
9.9.2. Display flashes
Unit is cold, condensing unit is not operating, information on the display flashes.
Status display: First figure = E
Figure 3 + 4 = Error code
Meaning: Determine error code by means of Annex 1: Error codes.
Further procedure: Note error code
Remedy cause and acknowledge with "RESET" key
Note: The starting sequence up to the ignition of the flame lasts at least 5 minutes
after the RESET key is pressed.
If the VARINO GRANDE condensing unit should return to error after the
acknowledgement, then please contact the customer service.
9.9.3. Error codes
See Annex 1: Error codes, page 30.
9.10. Closing down the condensing unit after the heating season (summer operation)
- Burner switch on control panel to OFF. The figure A appears with the current boiler temperature on the status
display.
Units that have an installed Ygnis heating controller automatically switch to summer operation.
- Close gas shut-off cock on the boiler rear wall or in the gas supply line.
Note: The mains voltage should not be switched off by means of an external main switch because the
oxygen sensor must also be heated during the summer (power consumption approx. 1 watt).
If sanitary water production takes place in summer operation with the VARINO GRANDE, the
burner switch may not be switched off.
In the case of frost danger when the unit is switched off, the installation must be emptied.
9.11. Commissioning the boiler when starting heating
- Open the gas shut-off valve on the boiler rear wall or in the gas supply line.
- Burner switch on control panel to ON. After a long stand-still it is possible that the burner will have a false
start (error message E 2) upon the initial start test. Use the "RESET" key to reset the unit. If a false start
occurs again, please notify your customer service.