* Fault Message *
SS01: Main Power F0102P1
⚠️VCB STUCK IN OFF POSITION Try to close VCB again.
Introduction
The “F0102P1 fault message number” primarily arises due to malfunction or defects in the VCB (Vacum Circuit Brearker). Because of which, the fault message “VCB STUCK IN OFF POSITION Try to close VCB again.” and “MAIN POWER ISOLATED VCB Inhibited loco is dead.” appears in the DDU (Driver Display unit).
💡Lamp Indication
LSDJ & BPFA will glow, LSFI will start blinking.
❌Effect
VCB control changed to redundant proccessor.
🛠️Action to be taken by Loco Pilot
- Bring Throttle to “0”position. Acknowledge fault by pressing BPFA.

- Otherwise coast to clear the block section, if posible, then bring the loco to dead stop.
- Switch OFF the MCE and Switch it ON once again.(Click here for MCE OFF and ON procedure)
- Raise panto
- and close VCB
- and resume Traction.

- If not successful, try from rear cab.
* Fault Message *
SS01: Main Power F0102P1
⚠️MAIN POWER ISOLATED VCB Inhibited loco is dead.
💡Lamp Indication
LSDJ & LSFI will glow.
❌Effect
VCB will not close.
🛠️Action to be taken by Loco Pilot
- Switch OFF the MCE and Switch it ON once again. Try to resume traction, if not successuful, then
- (Click here for MCE OFF and ON procedure)
- Ask fo relief loco within 20 minutes.
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