Faults
Logamatic SC40 - Technical specifications are subject to change without prior notice.
70
8
8
Faults
8.1
Faults indicated on the display
When indicating a fault, the display is back-lit in red. In addition, the type of fault is indicated by sym-
bols. The individual fault messages can be retrieved using the rotary selector. Fault messages con-
tinue to be displayed until the fault is rectified.
V
In the case of sensor faults, eliminate the cause of the fault to cancel display of the fault.
V
With other faults, eliminate the cause of the fault and then press the rotary selector
to can-
cel display of the fault.
Indication/Type of fault
Effect
Possible causes
Remedy
Sensor failure S1 ... S8
Associated components
(pumps/valves) are switched
off.
Temperature sensor not/incorrectly
connected.
Check sensor connections. Check
temperature sensors for breakages
or incorrect positioning.
Temperature sensor or sensor lead
defective.
Replace temperature sensor.
Check sensor lead.
Sensor short circuit S1 ... S8
Associated components
(pumps/valves) are switched
off.
Temperature sensor or sensor lead
defective.
Replace temperature sensor.
Check sensor lead.
“No fluid flow in solar systems”/“secondary system”
The temperature difference
between collector temperature
sensor and bottom cylinder
temperature sensor or between
heat exchanger flow tempera-
ture sensor and bottom cylinder
temperature sensor is too
great.
Air in the system.
Bleed the system.
Pump is stalled.
Check the pump.
Valves or shut-offs are closed.
Check valves and isolators.
Pipe clogged.
Check/flush out pipe.
“Daily heating running time error”
The daily heating function has
not been carried out.
Target temperature not reached.
Check the pump. Check the cylinder
temperature. Check supplementary
heating.
“Collector connections reversed”
Collector temperature drops
10 K (°C) within 15 seconds of
switching on.
Collector connections reversed.
Fit flow and return pipes correctly.
Tab. 39 Possible faults indicated on the display
OK