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8.2
Warning messages:
Code
Symbol
Nr.
flashing
E03
E04
E05
E07
E11
E38
Motor
E50
E51
E52
MA
If the fault cannot be remedied, please contact your local plumbing and heating specialist or WILO customer
services.
For latest prices and delivery to your door visit MyTub Ltd - 0845 303 8383 - www.mytub
50
Error LED "off"
Problem
Water temperature
>110°C
Mains undervoltage
Mains overvoltage
Generator operation
Pump idling
Temp. sensor medium
faulty
PLR/LON -
communcation error
non-permissible
combination
Master/slave
communication error
Pump switches from
standard mode to fixed
characteristic (de-
pending on chosen set
value, see fig. 11)
Master/slave
not set
cause
Heating control incorrectly
set
Mains overloaded
Driven by admission pressure Balance pump capacity
pump
Air in the pump
Motor faulty
(automatic night setback)
Interface, line faulty,
IF modules not plugged in
properly, cable faulty
Different pumps
Stratos IF module not
correctly positioned,
cable faulty
remedies
Set to lower temperature
Check electrical installation
Check electrical installation
regulation
Vent pump and unit
Call customer services
After 5 min. unit
switches from PLR
mode to local mode control
After 5 min. the modules
switch to single-pump
mode.
Reinstall modules,
check cable
Specify master and slave
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