Ideal Pump 178983

Part number 178983 is a circulation pump listed for Ideal Commercial heating appliances. The pump moves water through the appliance and the heating circuit, maintaining flow through the heat exchanger and around the system. The supplier specification records the brand for this part as Vaillant.

• The pump runs hot or is noisy in operation, with rumbling, humming or grinding audible at the casing.
• Heating or hot water output drops, or the appliance cycles on and off without reaching temperature.
• The appliance locks out or reports a flow or circulation fault.
• The pump head is stiff to turn by hand, or does not turn at all, when the power is isolated.
• Radiators or cylinder circuits stay cold while the appliance itself fires.

• Confirm the appliance model and serial number against the compatibility list before ordering, as pump fitment varies between Ideal Commercial ranges.
• Check the part number stamped or labelled on the existing pump matches 178983 or the alternative number 178983IDE.
• Check whether a gasket or seal kit is needed for the pump connection on your appliance, as these are often replaced at the same time.
• Work on the appliance should be carried out by a competent engineer; isolate the electrical supply and drain or isolate the water circuit before removal.