English translation of the Norwegian library. Product names and original documents retain their source language. Model-specific maintenance steps have been reviewed; other text uses assisted translation. Check the original manual before work.

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User guide · VESTA-422

Vesta PIRCAM 720P Grad 3 innendørsdetektor BUS

Kablet · BUS — This article uses cable for the alarm system. It should not be treated as a wireless sensor.

Coverage: Use and checks – technician required to open

Product image VESTA-422
Product VESTA-422 · Supplier product page

Manual for this product

VESTA-422 – open the original manual at Vesta

Battery/power: Cabled supply; no customer exchange procedure for sensor battery

Before you start: check the full model name. Agreement test/service with the alarm provider before opening. Keep fastening and placement. On real smoke or fire: manage the danger first.

The source link below points to the exact article. Internal opening, cableling and full re-installation have not been turned into a general DIY recipe.

1. Take down or open

  1. Do not open or pull down the device with wires connected.

4. Test and confirm normal operation

  1. Read the status on the panel or app and note the exact fault message.
  2. Arrange a functional test and have normal communication and receipt confirmed.

Attach and Mount

  1. Keep the existing mount, orientation and wiring. Check externally that the device is not covered or loose.

Original images and technical drawings

Technical drawing is not installed here yet. Open the associated original manual and control model before demounting.

Check that the drawing and any variations in the original manual are consistent with the device. Sources checked 08.09.2026. The step marked as derived is not an explicit disunity instruction from the manufacturer.

Date: ________; · Battery type/number: ____________________________________________________________
Datasheets, photos and movies from Climax

Fra produsenten Climax

VST-897-BUS Series · Vesta-modell: VST897-IL-BUS

The manufacturer's side covers this model family. Check the protocols, frequency, power supply and variant in the Vesta manual before using technical values or mounting advice.

Description, specifications and images at Climax

Datasheets and product brochures

Climax Product photos (1)

The pictures show the manufacturer’s model family. Compare to your Vesta variant.

Films and demonstrations (7)

Manufacturer’s functional demonstrations. These are not necessarily assembly or battery replacement videos.

Vesta/By Demes: modellgrunnlag · Kontrollert 08.09.2026

Help when the product does not work

Wired/BUS: Look for visible cable damage and whether several devices lost contact together. Do not open the panel, disconnect the BUS or measure terminals yourself. Ask the installer to check power and communication.

Choose the symptom and check the model scope before following the steps. This is troubleshooting, not a list of confirmed product defects.

General advice — model-specific fault procedure missing.

Motion detector: unexpected alarm or no response

Applies to: General advice for the sensor type — not a verified procedure for this model. Use the model manual for opening, battery type, testing and settings.

  1. Check which detector and event are named in the alarm. Record the time and whether the system was armed.
  2. Look for furniture, curtains or objects blocking its view. Note changes involving heaters, sunlight, draughts or pets in the area.
  3. Do not rely on the LED alone as a functional test. Arrange a walk test with the monitoring service using the model test procedure; some detectors have a sleep period.

Check the result: An agreed test is registered from the correct detector.

Stop and get help: For repeated alarms or missed detection, contact the installer. Do not change sensitivity or position without checking coverage.

Background source / example model (not model verification): support.ajax.systems — open documentation

Find help for another product Contact support

Sources reviewed 9 September 2026. Not tested on your installation.