Ideal
Ideal Pressure Switch HIU 177637
Ideal 177637 HIU pressure switch, a replacement pressure sensing switch for Ideal Commercial heat interface units. Alternative number 1782840.
At a glance
- Part type: Pressure switch
- Appliance family: Ideal Commercial HIU
- Also known as 1782840
£89.12
£74.27 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Ideal 177637 is a pressure switch supplied as a spare for Ideal Commercial heat interface units (HIU). It senses pressure within the unit and signals the control circuit when the required level is reached or lost, so the appliance can run and modulate correctly. The switch is listed under part number 177637, with alternative number 1782840 used in some catalogues.
Signs this part needs replacing
- The heat interface unit fails to fire or drops into lockout despite a call for heat.
- Pressure readings at the unit do not match the system gauge, or the reading stays fixed.
- The unit short-cycles, running briefly and then shutting down before reaching temperature.
- Pressure-related fault codes appear on the appliance controls.
- Operation is intermittent and clears temporarily after a reset.
Before you order
- Confirm 177637 against the label on the existing switch or the parts list for your appliance.
- Check the appliance model and serial number against the compatibility list before ordering.
- Cross-reference the alternative number 1782840 when comparing listings.
- Have the unit isolated and depressurised before removing the old switch.
Mechanical
| Part type | Pressure Switches |
|---|---|
| Appliance family | Ideal Commercial HIU |
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 177637 |
|---|---|
| GPC classification | Valves/Fittings Accessories/Replacement Parts - Water and Gas |
| Alternative numbers | 1782840 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| IDEAL COMMERCIAL IDEAL COMMERCIAL PARTS | — | — | — |
Documents & drawings
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