Smeg HTY511DSUK Original Instructions Manual page 21

Boiler water filling
malfunction
Er
25
Boiler emptying
malfunction
Er
26
Boiler emptying
malfunction – with tank full
Er Or boiler full signal on
27 models without rinsing
pump
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"
- 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)
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
21