User manual
Maintenance and Service 
Page 96 
English 
4.2  Adding service fluid 
If the service fluid level is low, the message: "Please refill service fluid" 
is displayed on the operating panel. 
INFO: 
If this message is displayed frequently, check that the air supply at the in-
stallation location is sufficient. There is no need to add service fluid under 
normal operating conditions. 
Use original EFOY service fluid only. 
Switch off the EFOY COMFORT fuel cell before refilling with service fluid. 
Disconnect the charge line. 
Make sure that no dirt or foreign bodies enter the fill opening. 
1.  Use a clean pair of scissors to cut off 
the tip of the bottle. 
INFO: 
The service fluid bottle is for one 
time use only. 
2.  Disconnect the exhaust hose from 
the device. 
 










