Checking the Inputs and Outputs ESIE98–06A
3–18 Part 3 – Troubleshooting
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3.4 Checking the Power Supply and Fuses
Overview The following overview shows the circuits, the voltage and their fuse codes:
PCBs All PCBs are supplied with a 24 V AC voltage. The yellow led on the main board indicates that power
is supplied.
Overview fuses and
over current
EUWA/Y5-10HB
The table below gives an overview of the fuses for each chiller type in the range EUWA/Y5-10HB:
Overview fuses and
over current
EUWA/Y15-30HC
The table below gives an overview of the fuses for each chiller type in the range EUWA/Y15-30HC:
Circuit Wiring code Type / voltage Fuse code
main supply L1+L2+L3+M 3 phases / 200 V AC F1U+F2U+F3U
control circuit (fans + relays) L2+M 1 phase / 230 V AC F7B
control circuit (pcb’s) TR1-prim. 1 phase / 230 V AC F5B
TR1-sec. 24 V AC F6B
Code EUWA/Y5HB EUWA/Y8HB EUWA/Y10HB
W1 T1 W1 T1 W1 T1
F1U, F2U, F3U 20 aM 25 aM 25 aM 63 aM 35 aM 63 aM
F5B 0.45 A 0.45 A 0.5 A 0.5 A 0.5 A 0.55 A
F6B 1A1A1A1A1A1A
F7B 6A6A6A6A6A6A
K4S 10A 17A 18A 28A 21A 34A
Code EUWA/Y15HC EUWA/Y20HC EUWA/Y25HC EUWA/Y30HC
W1 T1 W1 T1 W1 T1 W1 T1
F1U, F2U, F3U 40 aM 63 aM 50 aM 80 aM 63 aM 100 aM 80 aM 125 aM
F5B 1A1A1A1A1A1A 1A 1A
F6B 2A2A2A2A2A2A 2A 2A
F7B 6A6A8A8A8A8A 10A10A
K4S 21A 34A 21A 34A 21A 34A 21A 34A
K5S 10A 17A 21A 34A 21A 34A 21A 34A
K6S — — — — 10 A 17 A 21 A 34 A
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