Operating instructions

114
Troubleshooting
Faults which are displayed at the programming unit (cont.)
Fault
code
System
characteristics
Cause Remedy
58
Cylinder primary
pump ON:
Set cylinder water
temperature = set
boiler water
temperature,
priority control is
cancelled
or
With cylinder
storage system:
Cylinder heating is
started and stopped
by cylinder temp.
sensor 2
Lead broken
Cylinder temp.
sensor 1
Check cylinder temp.
sensor
(see page 130)
59
With cylinder
storage system:
Cylinder heating is
started and stopped
by cylinder temp.
sensor 1
Lead broken
Cylinder temp.
sensor 2
60
Boiler at maximum
temperature,
no output reduction,
Short circuit
Temperature sensor
aJA
Check temperature
sensor
(see page131).
68
p,
return control OFF
Lead broken
Temperature sensor
aJA
(pg )
Without
temperature sensor
Set code "4A:0"
70
Shunt pump
constantly ON
With cylinder
storage system:
Short circuit
Temperature sensor
aJB
Check temperature
sensor
(see page131).
Without
78
storage system:
Mixer primary
circuit closed, no
DHW heating
Lead broken
Temperature sensor
aJB
Without
temperature sensor
Set code "4b:0"
5862730GB