Texecom Premier Elite — Zone Fault Diagnosis

Purpose

This guide covers diagnosing and resolving zone faults on the Premier Elite — zones showing as Open, Tamper, or Fault on the keypad when they should be secure.

1. Identifying the Faulting Zone

Via keypad:

Enter a user code — the keypad scrolls through active faults
Note the zone number and zone name shown
Use the arrow keys to slow the display and read all faults

Via Wintex (faster for multiple faults):

Connect Wintex
Go to Diagnostics → Zone Status
Live zone states are shown for every zone: Secure, Open, Tamper, or Fault
Monitor in real time as you work through the cable run — changes appear immediately

2. Understanding Zone States

The Premier Elite uses double pole EOL resistors (4k7 + 2k2) to distinguish between four zone states. The panel measures the resistance in the zone circuit and compares it to the expected values:

Zone state	Resistance panel sees	What is happening
Secure (Normal)	~2k2 Ω	N/C contact closed, shorts the 4k7 — only 2k2 remains
Alarm	~6k9 Ω	N/C contact open (triggered) — 4k7 and 2k2 both in circuit
Tamper	Open circuit	Tamper switch has opened — lid removed or device removed
Short / Fault	~0 Ω	Zone wiring shorted together

See the Zone Wiring Guide for full EOL resistor wiring detail.

3. Symptoms and Likely Causes

Symptom	Likely cause
Zone shows "Open" with nothing triggered	Wiring break in the zone circuit, failed EOL resistor, loose terminal, connector unplugged
Zone shows "Tamper"	Detector lid open or not properly seated, device removed from bracket, wiring shorted at the detector
Zone shows "Short / Fault"	Zone cores shorted together in the cable run (staple through cable, crushed cable, bad junction)
Zone intermittently faults	Loose crimp or terminal screw, corroded connection, cable moving in a draft near a loose junction
Zone shows open permanently	PIR internally faulty, door contact magnet misaligned, contact has failed
All zones on an expander faulting simultaneously	Expander power or data bus fault, incorrect expander address — see expander diagnosis below

4. Diagnosing with a Multimeter

A multimeter in resistance (Ω) mode lets you read the zone circuit directly:

At the panel terminal (zone disconnected)

Disconnect the zone cores at the panel terminal
Measure resistance across the two zone cores at the panel end

Reading	Diagnosis
~2k2 Ω	Zone is secure — correct reading
~6k9 Ω	Zone is in alarm state (contact open at detector)
Open circuit (OL / infinite)	Cable break, tamper open, or resistor missing
~0 Ω	Zone cores shorted

At the detector end

At the detector, measure across the detector terminals (cover closed)
If the detector is a Texecom PIR, the built-in resistors give ~2k2 in the secure state
If the reading at the detector is correct (~2k2) but the panel shows a fault, the fault is in the cable between detector and panel

Tracing a cable break

Confirm the fault is in the cable (readings correct at detector, wrong at panel)
If the run is accessible, work back from the detector end in sections — measure at intermediate junction boxes to narrow down the break location
Check all junction boxes for loose connections, corroded crimps, or rodent damage

5. Common Zone Fault Resolutions

Zone "Open" with no physical activation

Check the detector is powered (red LED active on PIR during walk test)
Check all terminal connections at the detector and at the panel — reseat and re-tighten
Remove the detector and check the wiring in the backbox
If a junction box is in the cable run, open and check every connection
Use a multimeter to locate the break as above

Zone "Tamper"

Check the detector lid is fully seated and clicked closed
Check the detector is properly fixed to its bracket (wall tamper)
On door contacts, check the contact housing is fully assembled
If tamper clears when you hold the lid shut but springs back, the tamper switch is misaligned — adjust the lid or replace the device if damaged

Zone intermittently faulting

Inspect all connections at the detector, any junction boxes, and at the panel terminal
Look for:
- Loose terminal screws — re-tighten
- Crimps that have corroded or pulled loose — re-crimp
- Cable vibrating near a loose junction
- Connections exposed to moisture (loft junction boxes in winter)
Apply a small amount of pressure to suspect connections while watching the zone state in Wintex Diagnostics — movement causing a fault change confirms the location

All zones on an expander faulting

Check the expander's data bus connections (T and R cores at both ends)
Check the expander has power (+12V and 0V)
Confirm the expander address (DIP switches) — if two expanders share an address, both will malfunction
Check the termination resistor (1kΩ between R and + at the last device on the bus)
Re-seat the expander's bus connectors

6. When to Replace a Detector

Replace the detector if:

It fails to trigger during walk test with correct power and wiring
It triggers randomly with no movement in the detection zone (internal PIR fault)
The tamper switch is mechanically broken
The device is physically damaged or has been exposed to water

If the fault is with the wiring rather than the detector, fix the wiring — replacing a working detector will not fix a cable fault.