Strebel S-CB Px 120, Руководство по установке, эксплуатации и техническому обслуживанию

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S-CB Px 120 Manual 95
Display message
F13
P a r a m / H a r d w f a u l t
p u m p o n 9 9 9 , 5 h r s
Reason Failure during programming of the parameters.
Cause:
Programming of the parameters NOT successfully completed.
Corrective action:
Unit is not in stand-by mode (fan must not run during programming).
Check programming wire and connections and try again.
Check if the software complies with the PCB.
Replace the programming wire.
Replace the display PCB.
Display message
F15
C l i x o n F a u l t
p u m p o n 9 9 9 , 5 h r s
Reason
Heat exchanger fuse or burner door clixon exceeded maximum
allowed value.
Cause:
The thermal fuse of the heat exchanger has opened permanently.
Corrective action:
Switch off the electrical power and gas supply and contact supplier.
Cause:
The burner door clixon has opened.
Corrective action:
Remove the burner door of the heat exchanger and check the burner door gasket for
leakage.
Check the burner door for deformation; when it deforms it must be replaced.
Check the heat exchanger for dirt and check that the flue is not blocked.
If heat exchanger is clean, reset manually the clixon itself and reset the boiler.
Display message
F16
F l o w R e t u r n d t f a u l t
p u m p o n 9 9 9 , 5 h r s
Reason:
Temperature difference between flow and return exceeds limi-
tation value, or 'Heatexchang at Risk' has occurred 3 times.
Cause:
The water flow through the unit is too low.
Corrective Action:
Check functioning of the pump.
Check/open all valves that might restrict the water flow throught the unit.
Check for an external system pump that influences the flow through the unit.
Check if the system resistance exceeds the spare capacity of the unit pump.
Make sure the heat exchanger is clean. Heat exchanger fouling (partly blockage) will
increase the resistance causing the water flow to drop.
Display message
F17
W a t e r h i g h l i m i t
p u m p o n 9 9 9 , 5 h r s
Reason Maximum thermostat exceeds limitation value.
Cause:
The water flow is restricted.
Corrective action:
Check functioning of the pump.
Check/open all valves that might restrict the water flow through the unit.
Check for an external system pump that influences the flow through the unit.
Check if the system resistance exceeds the spare capacity of the unit pump.