Genuine Pentair® Mastertemp HSI Igniter & Gasket Kit - 200, 300, 400
Genuine Pentair® Mastertemp HSI Igniter & Gasket Kit - 200, 300, 400 is temporarily out of stock and will ship as soon as it's available.
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Don't Guess - Ask Us!
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Genuine Pentair® Mastertemp HSI Igniter & Gasket Kit - 200, 300...
Genuine Pentair® Mastertemp HSI Igniter & Gasket Kit - 200, 300, 400 is temporarily out of stock and will ship as soon as it's available.
Genuine Pentair Mastertemp / Waterco Turbotemp HSI Igniter & Gasket Kit
GENUINE Igniter / Ignitor & Gasket Kit For Pentair Mastertemp, Waterco Turbotemp, Sta-Rite Max-E-Therm Gas Pool & Spa Heaters - 200 / 300 / 400 HD models.
- Physically Stocked, unlike most "drop-shipping" websites.
- Shipped from VIC, NSW, WA, QLD
- This is not a cheap, generic part found online. It is a genuine Pentair® OEM product.
Numbers 2, 3 & 4 in the Diagram.
Important Notes:
- These igniters should test 50-500Ω. Note that generally, we replace igniters that measure over 90Ω, as anything higher suggests a fault.
- Cannot be returned for change of mind.
-
These are fragile and easily broken. Each igniter is packed well, and inspected before posting.
Pentair Mastertemp / Waterco Turbotemp Electrical Parts List:
- 2. / 3. / 4. Igniter & Gasket Kit
- 5. AGS Switch 60°C / 140°F
- 6. HLS Switch 55°C / 131°F
- 6b. 45°C Switch
- 7. Thermistor / Temperature Sensor
- 10. Ignition Control Module
- 12. Air Flow Switch
- 13. Main PCB / Control Panel
- 15. Touchpad Membrane
- 16. SFS Sensor
Pentair Mastertemp, Waterco Turbotemp, Sta-Rite Max E Pro Error Codes:
Diagnostic LEDs / Error Messages & Causes:
- PS - Check / Replace Pressure Switch. Signifies flow issues.
- HLS - Check / Replace High-Limit Switch/es (faults above 45°C or 55°C) Signifies flow, bypass, governer issues, or other issues.
- AFS - Check / Replace Air Flow Switch. Signifies fan, air flow, or other issues.
- AGS - Check / Replace AGS Automatic Gas Shutoff Switch/es (faults above 60°C). Signifies flow, bypass, governer issues, or other issues. Can also be caused by a 45° Limit Switch on top of the manifold.
- SFS - Check / Replace SFS Stack Flue Sensor (faults above 249°C). High or Low Flue Temperatures are a sign of significant combustion issues, or other issues.
- E01 - Thermistor Fault. Replace Thermistor.
- E05 - General Fault. Needs service. This can be caused by several issues.
- Showing Incorrect Temperature - Replace Thermistor. Check all filters clean. If thermistor shows corrosion, water balance is poor.
77707-0054
To the layperson, plumbing sizes and their names can be confusing due to the nominal sizes and naming conventions used.
This is not something we made up. Plumbers and manufacturers have used nominal (meaning ‘by name only’) sizing for decades.
Simply put, in plumbing, named sizes are often not the actual measurements of the pipe, fitting, or part. A PVC pipe called “50mm” or “2"” does not measure 50 mm anywhere. Instead, it follows nominal sizing, an internationally-standardised naming system.
Almost all fittings we use in the pool & spa industry use “pressure PVC” pipe & fittings. Do not confuse with “DWV” or other pipe & fittings and their names and sizes.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
To reiterate, these are nominal sizes and are designed to fit matching fittings — not to measure what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems and other plumbing areas so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate.
Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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P77707-0054
