Operating instructions

74
Temperature sensors type Ni 500
400
-40 -20 0
Resistance in
Temperature in °C
440
480
520
560
600
20
40
60
640
Capturing element: "Ni 500"
■ Outside temperature sensor (F0)
■ Flow temperature sensors, heating cir-
cuits M2 (F12)
■ Flow temperature sensor, separate
cooling circuit
■ Room temperature sensors (Vitotrol)
Temperature sensors type Pt 500
460
20
540
100
Resistance in
Temperature in °C
60 140 180
620
700
780
860
-20
Capturing element "Pt 500"
■ Flow temperature sensor, system
(F13)
■ Buffer temperature sensor (F4)
■ Cylinder temperature sensor (F6)
■ Flow/return temperature sensor, sec-
ondary circuit (F8/F9)
■ All sensors inside the heat pump
■ Collector temperature sensor (F21)
Checking the fuse
For fuse locations, see from page 119:
■ Fuse F1 is located on the luster termi-
nals.
■ Fuse F3 is located on the main PCB.
Fuse F1 and F3:
■ 6.3 A (slow), 250 V~
■
Max. power loss ≤ 2.5 W
Troubleshooting
Repairs
(cont.)
5441 603 GB