Need help?Do you have a question about the Vaillant THERMOcompact VC180 and is the answer not in the manual?
Details components and functions of the boiler's front control panel, including indicators, switches, and potentiometers.
Outlines legal requirements for gas appliance work and electrical safety checks, emphasizing competent persons and regulations.
Verifies power supply by checking the main rocker switch's red neon indicator and appliance fuses.
Guides through checks for fan operation, including lockout reset, potentiometer, time delay, fuses, thermostats, and NTC sensors.
Troubleshoots pump operation by checking voltage and rotation, and verifies hydraulic system integrity.
Diagnoses ignition failures by checking microswitches, fan pressure switch, flue, chamber seals, and fan function.
Investigates burner ignition issues by checking gas supply, spark, electrodes, flame monitoring, and stability.
Assesses burner modulation to high and low fire rates, checking gas pressure and diaphragm pump function.
Troubleshoots DHW operation by checking demand, water section, microswitches, diverter valve, and flow rate.
Verifies pilot light establishment and checks gas supply, pilot injector, ignitor, thermocouple, and overheat thermostat.
Verifies the main switch's red neon indicator and checks appliance and spur fuses for power integrity.
Troubleshoots pump operation by checking voltage, rotation, and external control power.
Checks hydraulic operation by verifying diverter valve movement, differential valve closure, and system pressure.
Diagnoses burner ignition issues and checks modulation to high fire rate, verifying controls and gas pressure.
Checks burner modulation down to low fire and DHW operation, including NTC/electronic board and gas operator.
To Next Page
General