power supplies fuses

RELATED FAQS

Question
Answer
If AC fuse blowing on a  PS914 power supply then the mother board is defective. You need to replace the power supply with a new one.
Reference The 914 Installation instructions.
The following could cause the Chexit device shipped prior to 8-24-2015 with solenoid driven to go into weak alarm with solid LED light: Wrong power supply- Chexit device requires  a...
  For Product Shipped Prior to August 2012 using the old (black) potted module: a.       0-100 ft 14 gauge wire b.      0-200 ft 12...
 
The following could cause the Von Duprin CX solenoid ( devices shipped prior to 8-24-2015) to pull and drop and sound the alarm with solid LED light. Wrong power supply, requires Von Duprin ...
The following could cause the Chexit solenoid ( devices shipped prior to 8-24-2015) pulls in then drop out with no alarm. Mechanical adjustment such as vertical rods. Disconnect t...
The battery for the PS873 and PS914 are the same, 7AH sealed Lead Acid  battery.
The old MPB842 power supply will power up to two EL electric panic bars but will not power the QEL devices.  A defective potted module inside the electric panic bar or defective power supply coul...
Chexit devices shipped prior to 8-24-2015 with solenoid driven could cause the Von Duprin CX solenoid to pull and drop and sound the alarm with solid LED or no LED light after the rear...
The DC output fuse in the PS873 power supply is 4 AMP slow blow.
The main AC fuse would blow if there is a direct short across the AC line. This could be caused by a:1. Defective I/O PC Board (-3180) To check - unplug the control box AC power cable (2 wire) fro...
MPB840 = PS914power supply, MPB842 = PS914-2RS power supply.
The following could cause the fuse to blow in the power supply with devices shipped prior to 8-24-2015 with solenoid driven when Chexit device is arming. Wrong power supply Confirm PS873 or...
The Von Duprin PS914 power supply with either the 900-2RS  or the 900-4RL option board is required.
Following could cause the fuse to blow in Von Duprin PS873 power supply. PS873 power supply provides 2AMP at 24VDC or 4AMP at 12VDC. If this limit is exceeded the fuse will blow in the power sup...
RX switch is request exit and LX switch is latch bolt monitor switch. They do not required a power supply directly. The electrified hardware that RX or LX switch conne...
If the Main AC fuse is blowing, the control box is defective and needs to be replaced.  The "Main Fuse" is a (5x20MM) 1 Amp Slow Blow fuse. If the 12VAC fuse is blowing, verify they are not trying...
This is not possible.  Due to the device's 16 Amp in-rush it would require it's own PS914-2RS which will power 1 or 2 devices.