20
Er 25
Boiler water filling
malfunction
The boiler wasn’t filled in the expected time: check the water
supply tap, the dynamic supply pressure, cleanliness of the inlet
water filter, any damage of the water charging hose, or check the
following in this order:
- faulty boiler pressure switch (it always detects “empty”),
- leakage or unbinding of the tube (water runs inside the tube)
- menu service wrong setting “rP”
Er 26
Boiler emptying malfunction
- check cleanliness of the rinse nozzles
- faulty boiler pressure switch (it always detects “full”)
- leakage or unbinding of the tube (water runs inside the tube)
- rinsing pump malfunction (if present)
Er 27
Boiler emptying malfunction –
with tank full
Or boiler full signal on models
without rinsing pump
Faulty boiler pressure switch (it always detects “full”). If this
occurs in models without rinsing pump, the boiler pressure
switch is wrongly detected: check settings in the service menu on
entry “rP”
“rp” = on for models with rinsing pump
“rp” = of for models without rinsing pump
