
32
Error code
Description
352
Pressureless header address error
353
Cascade sensor B10 missing
357
Flow temperature cooling circuit 1 monitoring
366
Room temperature Hx sensor error
367
Relative room humidity Hx sensor error
Maintenance code
Description
1
Burner hours run exceeded
2
Burner starts exceeded
3
Maintenance interval exceeded
5
Water pressure heating circuit too low
(dropped below lower pressure limit 1)
18
Water pressure 2 heating circuit too low
(dropped below lower pressure limit 2)
10
Replace battery of outside sensor
21
Maximum flue gas temperature exceeded
22
Water pressure 3 heating circuit too low
(dropped below lower pressure limit 3)
Operation code
Description
301
Manual operation
302
SLT test
303
Chimney sweep function
309
Simulation outside temperature
310
Alternative energy operation
314
Economy mode
MAINTENANCE CODE
SPECIAL OPERATION CODE