Reliance XR & XR Pro Troubleshooting Guide: Common Faults, Beeping Keypads and System Errors
Troubleshooting a Hills Reliance XR or XR Pro alarm? Learn what common fault codes, beeping keypads, low battery warnings, AC power faults, communication errors and sensor faults mean, with practical troubleshooting tips and advice on when to consider an XR or XR Pro alarm upgrade.
Hills Reliance XR Fault Codes & Troubleshooting Guide
If your Hills Reliance XR or XR Pro alarm is beeping, displaying a warning message or showing a communication fault, don't panic. In many cases, the system is simply alerting you to a maintenance issue rather than a security breach.
The Reliance XR and XR Pro are designed as modern replacements and upgrade platforms for older Hills Reliance and NX alarm systems, including systems such as the Hills R8, R12 and R128. Many existing sensors, wiring and other equipment can often be retained, helping make an XR upgrade a more cost-effective alternative to completely replacing an alarm system.
This guide explains the most common Hills Reliance XR fault messages, what they mean and what you can check before calling a security technician.
If you're still using an older Hills Reliance alarm and are experiencing recurring faults, you may also want to read our guide to upgrading an older Hills Reliance system to XR or XR Pro.
Why Is My Hills Reliance XR or XR Pro Beeping?
A beeping keypad is one of the most common indications that an alarm system has detected a fault.
A beep does not necessarily mean your alarm has been triggered. It can simply mean the panel has detected a condition that needs attention.
Common causes include:
- Backup battery failure
- AC mains power failure
- Communication faults
- Cabinet or box tamper
- Siren faults
- Date and time problems
- Wireless sensor faults
- Low wireless device batteries
- Communication or network problems
The first step is to check the message displayed on the keypad. Depending on the fault, the UltraSync+ app may also provide useful information about the system status
1. AC Power Fail
What does AC Power Fail mean?
An AC Power Fail message means the alarm panel has detected that its mains power supply is unavailable.
The alarm system can continue operating using its backup battery, but prolonged operation without mains power will eventually discharge the battery.
Common causes
- Household power outage
- Alarm transformer unplugged
- Tripped circuit breaker
- Faulty transformer
- Problem with the alarm panel's power supply
How to fix an AC Power Fail
- Check whether power is available elsewhere in the property.
- Confirm the alarm's power supply is plugged in.
- Check the relevant circuit breaker.
- Allow several minutes after power is restored for the alarm fault to clear.
If household power is working normally but the AC Power Fail message remains, the transformer, wiring or alarm panel may require professional testing.
Important
Avoid repeatedly resetting the alarm or disconnecting the battery to try to clear an AC fault. If the underlying power problem remains, the fault will return.
2. Low Battery or Battery Test Fail
A Low Battery, Battery Fault or Battery Test Fail message is another common reason for a Reliance alarm keypad to beep.
What does a Reliance XR battery fault mean?
The alarm's backup battery is responsible for keeping the system operating if mains power fails.
As batteries age, their ability to hold a charge decreases. A battery can appear normal during everyday operation but fail when the alarm needs to run from backup power.
Typical warning signs include:
- Low battery message
- Repeated keypad beeping
- Battery test failure
- Alarm problems after a blackout
- System resetting during a power outage
- Reduced backup operating time
If your battery is several years old, replacement may be all that is required.
Need a replacement battery?
If you're still running an older compatible Hills Reliance R4, R8, NX4 or NX8 system, we stock a 12V 5Ah replacement alarm battery
For a newer XR system, check the specifications of the battery installed in your panel before ordering.
When is a battery replacement not enough?
If a new battery continues to produce a battery fault, the problem may be related to:
- Battery charging circuitry
- AC power supply
- Panel electronics
- Incorrect battery connection
- Another fault within the system
In these situations, professional diagnosis is recommended.
3. Reliance XR Communication Fault
What does a Communication Fault mean?
A communication fault means the alarm system has been unable to successfully communicate with its intended destination.
Depending on how your system has been configured, this could involve internet, UltraSync, 4G or monitoring communications.
Common causes
- Internet outage
- Router replacement or configuration changes
- Network cable disconnected
- Wi-Fi connectivity problem
- Cellular communication problem
- 4G module issue
- Monitoring account configuration
How to troubleshoot a communication fault
- Check that your home's internet connection is working.
- Restart your modem/router if appropriate.
- Check network connections to the alarm.
- If your system uses 4G, check the communication module.
- Check the UltraSync+ app for system status.
- Contact your monitoring provider if the system is professionally monitored.
Want to add modern 4G/Wi-Fi connectivity?
The Reliance 4G/Wi-Fi Module is designed for Reliance XR and XR Pro systems and provides modern cellular/Wi-Fi communication options.
Reliance XR/XR Pro 4G/Wi-Fi Module
This can be particularly useful when upgrading an older alarm system that previously relied on traditional telephone-line communications.
4. Box Tamper Fault
What does a Box Tamper fault mean?
A Box Tamper fault indicates that the alarm panel has detected that its cabinet or tamper mechanism is not correctly secured.
This can occur after:
- Battery replacement
- Alarm servicing
- Panel upgrades
- Opening the alarm cabinet
- Incorrect tamper spring positioning
- Damage to the tamper mechanism
How to fix a Box Tamper
Check that the alarm cabinet is correctly closed and that the tamper mechanism is properly engaged.
If the fault appeared immediately after servicing or an upgrade, the tamper switch or spring may need adjustment.
If you're not familiar with alarm panel wiring, it is best to have a qualified security technician inspect it.
5. Siren Trouble
What does a Siren Trouble fault mean?
A siren fault indicates that the alarm panel has detected a problem with the siren circuit or siren device.
Possible causes include:
- Disconnected siren wiring
- Damaged cable
- Corrosion
- Water ingress
- Failed external siren
- Wiring termination problems
Symptoms may include
- Alarm arms normally
- Alarm events are recorded
- External siren does not sound correctly
- Siren trouble message appears
- Keypad begins beeping
What should you do?
Check the obvious external signs first, particularly if the siren is exposed to weather.
However, testing alarm siren circuits may require access to the control panel and should generally be carried out by a qualified security technician.
6. Wireless Sensor Faults
Reliance XR and XR Pro systems can support wireless security devices, making it possible to expand or upgrade an existing alarm without running new cable to every device.
A wireless sensor fault can occur when a device is no longer communicating correctly with the alarm panel.
Common symptoms
- Device offline
- Loss of supervision
- Sensor communication fault
- Low battery warning
- Intermittent sensor operation
Possible causes
- Flat or weak sensor battery
- Device moved
- Radio interference
- Sensor too far from the receiver
- Faulty device
- Communication problem
How to troubleshoot
- Check the sensor battery.
- Replace the battery if required.
- Check whether the sensor has been moved.
- Check the device's communication/signal status.
- Have the device re-enrolled or relocated if required.
If multiple wireless devices suddenly report faults at the same time, the issue may be with the wireless receiver or alarm panel rather than individual batteries.
7. Date and Time Fault
An alarm system may display a date or time-related warning after:
- Extended mains power failure
- Battery failure
- Panel reset
- Certain programming changes
Check the date and time through the keypad or system interface and correct them if necessary.
If the date and time repeatedly reset, the system may require further investigation.
Some alarm faults can be resolved easily, but repeated or multiple faults can indicate an underlying equipment problem.
Contact a qualified security technician if:
- A fault remains after the obvious cause has been corrected
- Communication faults continue
- The siren fault remains
- Battery faults return with a new battery
- Multiple devices report faults simultaneously
- The alarm repeatedly loses power
- You see an Over Current or similar electrical fault
- The panel continually resets
- You are unsure about working inside the alarm cabinet
Is Your Hills Reliance R8, R12 or R128 Becoming Unreliable?
If your alarm system is 10–15 years old or more, recurring faults may be a sign that the system is reaching the end of its practical service life.
Older Hills Reliance systems can also become increasingly difficult and expensive to maintain as compatible parts become harder to source.
Instead of replacing every sensor and cable, an XR or XR Pro upgrade can often modernise the control panel while retaining much of the existing alarm infrastructure.
This can be particularly attractive for homeowners who already have good-quality wired PIRs, reed switches, sirens and cabling installed.
Upgrade Your Hills Reliance R8, R12 or R128 to XR or XR Pro
The Reliance XR platform is designed to provide a modern upgrade path for older Hills Reliance and NX systems.
Depending on the installation, you may be able to retain existing:
- PIR motion detectors
- Door and window reed switches
- Sirens
- Alarm cabling
- Other compatible equipment
This means you may not need to completely remove your existing alarm system.
Looking for a cost-effective upgrade?
Our Reliance XR Alarm Upgrade Kit with panel, battery and power supply is designed for retrofit installations where an existing NX or Reliance alarm panel is being replaced.
Reliance XR Alarm Upgrade Kit – Panel, Battery & Power Supply
For homeowners who want to keep their existing sensors and wiring, our Reliance XR Upgrade Board with Metal Housing is another economical option.
Reliance XR Upgrade Board – Keep Your Existing Sensors & Wiring
Reliance XR vs XR Pro – Which Should You Choose?
Choosing between the Reliance XR and XR Pro largely depends on the size of your installation and how much future expansion you need.
Reliance XR
The standard XR is a strong choice for many residential properties and smaller installations.
It provides:
- Modern alarm control
- UltraSync+ smartphone connectivity
- Wired and wireless expansion options
- Compatibility with many existing Reliance/NX devices
- Modern communication options
- A cost-effective upgrade path
Reliance XR Pro
The XR Pro is designed for larger or more advanced installations requiring greater expansion capability.
It offers:
- Greater zone capacity
- More areas
- More users
- Greater keypad capacity
- Expanded wireless capability
- UltraSync+ smartphone control
- More scope for future expansion
For larger homes or installations with a significant number of zones, the XR Pro can provide a better long-term solution.
Compare the Reliance XR & XR Pro Alarm Range
Want a Modern Touchscreen Keypad?
One of the most noticeable improvements when upgrading an older Hills Reliance alarm is replacing an ageing keypad with a modern touchscreen interface.
The Hills Reliance XR Touch Keypad NXX-1820 features a 3.5-inch touchscreen and is designed specifically for Reliance XR and XR Pro systems.
Hills Reliance XR Touch Keypad NXX-1820
The touchscreen provides a much more modern way to operate the alarm and check system information compared with many of the older LCD keypads found on R8, R12 and R128 installations.
Shop Reliance XR & XR Pro Alarm Upgrade Kits
If you're experiencing repeated faults with an older Hills Reliance alarm, it may be worth comparing the cost of repairing the existing system with upgrading the control panel to the current Reliance XR platform.
Home Security Online stocks a range of Reliance XR and XR Pro alarm systems, upgrade boards, complete kits, keypads and communication modules.
Shop Hills Reliance XR & XR Pro Alarm Systems
You can also browse our complete range of Hills Reliance alarm upgrade kits.
View All Hills Reliance Alarm Upgrade Kits
Still Not Sure Which XR or XR Pro Upgrade You Need?
Every alarm installation is different.
If you have an existing Hills Reliance R8, R12, R128, NX8 or other Reliance system, don't automatically assume you need to replace every component.
In many cases, the most cost-effective solution is to upgrade the control panel and retain suitable existing sensors and wiring.
If you're unsure which Reliance XR or XR Pro upgrade kit is suitable, contact Home Security Online with a photo of your existing alarm panel, keypad and the number of zones currently connected.
We'll help you identify the most suitable upgrade option.
Final Thoughts
Most Reliance XR and XR Pro alarm faults are warnings designed to tell you that the system needs attention. A beeping keypad, low battery message, AC power fault or communication warning does not automatically mean that your entire alarm system has failed.
However, if faults are becoming increasingly common on an older Hills Reliance R8, R12 or R128, it may be time to consider an upgrade rather than continuing to replace individual ageing components.
A Reliance XR or XR Pro upgrade can provide a modern alarm platform, smartphone control, updated communication options and additional expansion capability while potentially allowing you to retain much of your existing alarm wiring and equipment.
Looking to upgrade your old Hills Reliance alarm?