AHU & extract controls
Electrical supplies, control panels and hardwired interfaces for air-handling and extract systems.
Ventilation Controls
Ventilation Electrical Controls
Electrical controls support for commercial ventilation systems, from panel supplies and fan controls to interlocks, field devices and functional testing.
ElectroLogic works on the electrical and hardwired control layer around ventilation plant. Mechanical repair, airflow balancing and BMS or drive software programming remain with the appropriate specialist.
Ventilation control systems
Understand the electrical path that allows ventilation plant to run.
An AHU or fan fault can sit in the incoming supply, control panel, starter, drive, sensor, interlock, field wiring or command path. Electrical diagnosis follows the expected operating sequence from request to confirmed plant response.
ElectroLogic supports agreed electrical controls work for ventilation plant in commercial buildings, including panel hardware, motor controls, field devices, hardwired interfaces and safe functional testing.
“Prove the electrical control path before assuming the fan or controller has failed.”
Technical capabilities
Electrical controls support across ventilation plant.
Supply, extract & jet fans
Motor supplies, local isolation, control circuits and electrical operational checks for supply, extract and car-park jet fans.
Kitchen extract systems
Electrical controls support for extract fans, interlocks and associated hardwired operating conditions.
Contactors & overloads
Starter components, auxiliary contacts, overload protection and associated fault investigation.
VSDs & inverters
Electrical supply, enable, run and fault circuits, and hardwired interfaces for drives; not drive programming.
Sensors & field devices
Electrical checks of temperature, pressure, airflow and air-quality or CO₂ sensors, actuators and connected field wiring.
Thermostats & control switches
Installation, replacement, wiring and electrical verification of thermostats, switches and local control devices.
Enable & interlock circuits
Run permits, proving circuits, safety conditions and hardwired operating logic.
Gas interlocks
Agreed electrical interfaces and control-circuit investigation for ventilation-related gas safety arrangements.
Fire-alarm interfaces
Shutdown, enable and ventilation control interfaces within the agreed electrical scope.
BMS connections & control wiring
Panel, field-device and hardwired BMS interface support, including tracing, termination, alteration and repair; not software configuration.
Functional testing & handover
Controlled electrical operational checks, relevant airflow measurements where required, safe reinstatement and clear recorded findings.
Ventilation fault diagnosis
Find where the ventilation sequence stops.
A ventilation fault can originate in the supply, panel, command, interlock, starter, drive, field device or the connected plant. The sequence is checked methodically before component replacement is proposed.
Trace the electrical control path from demand to verified response.
Lost supply or operated protection
Failed control power supply
Missing demand or command
Open safety or proving circuit
Failed contactor or overload
Drive or inverter condition
Faulty thermostat, sensor or actuator
Damaged control wiring
Gas-interlock condition
Fire-alarm shutdown
BMS command or interface issue
Mechanical fault or airflow condition requiring specialist support
- 1
Supply & control power
Verify incoming supply, isolation, protection and control voltage.
- 2
Demand / command
Confirm the required thermostat, switch, BMS or other operating request is present.
- 3
Permissives & interlocks
Check safety, proving, gas, fire and other hardwired operating conditions.
- 4
Starter / drive & field devices
Test contactors, overloads, drives, sensors, actuators and relevant control wiring.
- 5
Plant response & feedback
Confirm the fan or plant responds electrically and the expected status returns.
Ventilation plant & connected systems
Electrical controls support across the ventilation path.
Electrical support can extend from the panel supply and motor-control hardware to connected fans, field devices and hardwired building interfaces. Mechanical repair and airflow balancing remain with the relevant specialist, while electrical operational checks and airflow measurements can be supported where required.
Air movement
- AHUs
- Supply and extract fans
- Car-park extraction and jet fans
- Kitchen extract systems
- FCUs and MVHR where electrically relevant
Motor control
- Local isolators
- Contactors and overloads
- Motor starters
- Inverters / VSDs
- Run and fault feedback
Sensors & field devices
- Thermostats
- Temperature and pressure sensors
- Airflow and CO₂ sensors
- Damper and valve actuators
- Control switches
Interfaces
- BMS connections
- Fire-alarm interfaces
- Gas interlocks
- Enable and safety circuits
Operational ventilation plant
Careful testing around active buildings and air systems.
Controlled isolations
Safe isolation and reinstatement planned around critical ventilation duties and building operation.
Electrical operational checks
Methodical testing of the control sequence, motor circuit, field devices and relevant airflow measurements.
Specialist coordination
Working with FM teams, mechanical contractors, BMS engineers and relevant system specialists.
Clear fault boundaries
Identifying whether the issue sits in electrical controls, mechanical equipment, airflow performance or specialist software.
Electrical, mechanical & software boundaries
Separate the electrical control fault from the wider plant issue.
ElectroLogic can establish whether a ventilation issue is in the electrical supply, panel hardware, control wiring, field device or hardwired interface. Mechanical faults, airflow balancing, BMS programming and drive parameter changes are coordinated with the appropriate specialist.
As a disciplined diagnostic principle: prove the electrical controls path before changing software or mechanical components.
Supply and control voltage proven
Demand signal present
Interlocks satisfied
Starter or drive available
Field devices operating
Fan circuit healthy
Plant response confirmed
Feedback returned
Technical support process
Understand, isolate safely, trace the controls path, prove and hand over.
- 01
Understand
Confirm the reported symptoms, affected equipment and required ventilation operation.
- 02
Isolate safely
Plan controlled isolation, access and safe reinstatement around the live environment.
- 03
Trace the controls path
Check supply, command, interlocks, motor-control hardware, field devices and feedback.
- 04
Repair or modify
Complete agreed electrical repairs, component replacement or control-wiring alterations within scope.
- 05
Prove & hand over
Functionally test the completed electrical work, record findings and identify specialist follow-on actions.
Technical support
Need electrical controls support for ventilation plant?
Share the equipment type, symptoms, panel details and available control information. ElectroLogic can review the electrical control path and establish the next practical step.