Dorma RST - User Manual

Questions and Answers

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Anthony CollierAug 11, 2025
What to do if the Dorma RST Intercom System door doesn't open in PERMANENT OPEN mode?
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  Melissa ByrdAug 11, 2025
  If your Dorma Intercom System door isn't responding to an opening pulse or opening in PERMANENT OPEN mode, even though the drive unit works, it could be due to several reasons. First, check the solenoid valve connections and power supply (24 V DC). If there's voltage but too much power is being drawn (over 150 mA), the solenoid valve is likely defective, requiring drive unit replacement. If there's no voltage, the control unit is likely defective and needs replacement.
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Joshua CarrAug 26, 2025
What to do if the Dorma Interaom System door doesn't close in AUTOMATIC mode?
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  Christina FloresAug 26, 2025
  If your Dorma Intercom System door doesn't close when the program switch is set to AUTOMATIC or EXIT ONLY, the issue might be that an internal or external detector is constantly sending an opening signal. Try disconnecting the input terminals for the activators. If the door closes, then check and replace the activator if required. Another possibility is that the presence sensor is too sensitive or defective; try readjusting it or replacing it.
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Erica HolderSep 2, 2025
Why doesn't my Dorma Intercom System door close when switched to OFF?
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  mnorrisSep 2, 2025
  If the Dorma Intercom System door doesn't close when the program switch is set to OFF, the presence sensor might be too sensitive or defective; try readjusting or replacing it. Another potential cause is a defective solenoid valve that isn't switching off. Disconnect the solenoid valve and measure the power supply at the connection terminals. If there's no voltage and the door still doesn't close, the solenoid valve is damaged, and the drive unit needs replacing. If there is voltage, the control unit is defective and must be replaced.
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Caleb BarnesNov 18, 2025
Why doesn't my Dorma RST door respond to the opening pulse?
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  cynthia57Nov 18, 2025
  If your Dorma Intercom System door isn't responding to an opening pulse or opening in PERMANENT OPEN mode, start by disconnecting and bridging the input terminals for the activators to see if the door opens. If it does, the activator is likely defective and needs replacement. Also, inspect the program switch for defects or incorrect connections, and replace if necessary. Ensure the input terminals for the safety sensor on the hinge side and the latch bolt limit switch are bridged. Check the presence sensor, and readjust it or replace it if it's too sensitive or defective. Examine the 'door open' and 'wall blanking' limit switches for proper adjustment; readjust the cam or replace the switch if needed. Finally, if none of these steps work, the control unit may be defective and require repla...

Dorma RST Specifications

General

Brand	Dorma
Model	RST
Category	Intercom System
Language	English

Dorma RST - User Manual

Table of Contents

Questions and Answers

Dorma RST Specifications