JUMO TYA S202, Operating Manual, Page: 87 / 99

V1.00/EN/00709725 [Thyristor power controller TYA S202] 87
8 Error messages and alarms
8.2 Replacing a defective semiconductor fuse
Opening the
housing
h
Disconnect the built-in device from the voltage supply on all poles
v
Chapter 3.3 "Anschlussplan"
h
Check that the device is isolated (green Power LED must not be lit)
h
Press spring clip (A) to the right and lever up the plastic housing (at the
point marked with an arrow) using a screwdriver (B).
A plug connection separates the display, keys, and interface from the power
section and you will be able to see the semiconductor fuse.
Caution! Risk of burns!
The device's heat sink can heat up during operation.
The current device temperature is shown on the display.
v
Operating overview (on the first cover page)
A
B