Description
Overview
The iFJF FDXLBKP1930 Keypad Kit is a direct replacement control panel for H-Series Low NOx pool and spa heaters covering models H150F through H400F. When your pool heater's membrane keypad becomes unresponsive — buttons that require multiple presses, dead spots, or a completely blank display — this replacement restores full control of your heater's temperature settings, mode selection, and diagnostic functions.
Pool heater keypads are exposed to harsh conditions: direct sunlight, pool chemical vapors, humidity, and temperature extremes. Over time, the membrane overlay degrades, the ribbon connector oxidizes, and the tactile switches underneath wear out. Rather than replacing the entire heater control board ($300-600) or calling for expensive pool service, this affordable keypad replacement gets your heater back under your control in under 30 minutes.
Key Features
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Direct OEM Replacement — Exact fit for H-Series Low NOx pool and spa heaters, models H150F, H200F, H250F, H300F, H350F, H400F
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Restores Full Control — Fixes unresponsive buttons, intermittent operation, and display issues caused by a worn keypad membrane
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Pre-Wired Ribbon Connector — Simple plug-and-play installation — disconnect the old ribbon cable, connect the new one, reassemble
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Weather-Resistant Design — Sealed membrane construction resists moisture, UV exposure, and pool chemical vapors
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Cost-Effective Repair — Save $300-600+ compared to replacing the entire control board or calling pool service
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Quick Installation — Complete the replacement in approximately 20-30 minutes with a screwdriver — no special tools or expertise required
Technical Specifications
| Specification |
Details |
| Part Number |
FDXLBKP1930 |
| Compatible Models |
H150F, H200F, H250F, H300F, H350F, H400F (H-Series Low NOx) |
| Connection Type |
Ribbon Cable (Plug-and-Play) |
| Installation Time |
20-30 Minutes |
| Tools Required |
Phillips Screwdriver |
Compatibility
| Heater Series |
Models |
| H-Series Low NOx |
H150F, H200F, H250F, H300F, H350F, H400F |
⚠️ Verify Compatibility: This keypad is specifically for H-Series Low NOx models. It is NOT compatible with standard H-Series models or other pool heater brands. Check your heater's model number on the rating plate before ordering.
Installation Guide
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Turn Off Power — Shut off power to the pool heater at the circuit breaker — safety first!
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Remove Control Panel Cover — Unscrew and carefully remove the heater's front control panel cover
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Disconnect Old Keypad — Gently pull the old keypad's ribbon cable connector from the control board socket
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Remove Old Keypad — Peel off the old membrane keypad from the control panel face (use adhesive remover if needed to clean residue)
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Install New Keypad — Peel the backing from the new iFJF keypad, carefully align and press into place, ensuring no bubbles or creases
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Connect Ribbon Cable — Insert the new ribbon cable into the control board socket — ensure it's fully seated and locked
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Reassemble & Test — Replace the control panel cover, restore power, and test all buttons for proper function
FAQ
Q: My heater display is blank — will this keypad fix it?
A: A blank display can be caused by: (1) failed keypad membrane, (2) failed control board, or (3) power supply issue. The keypad is the most common and least expensive cause — try replacing it first. If the display remains blank after keypad replacement, the control board may need attention.
Q: Some buttons work but others don't — is this the keypad?
A: Yes. Individual button failure (like the temp up button working but temp down button not responding) is a classic symptom of keypad membrane wear. The tactile switches under specific positions degrade at different rates based on usage patterns.
Q: How do I know if my heater is the Low NOx H-Series?
A: Check the rating plate on your heater (typically located on the side or inside the front panel). It will list the model number — H150F, H200F, H250F, H300F, H350F, or H400F. The "F" suffix and "Low NOx" designation indicate the correct model for this keypad.
Q: Can I install this without disconnecting gas or plumbing?
A: Yes. The keypad replacement is an electrical/control panel repair only. You do not need to disconnect the gas supply, water plumbing, or venting. Simply turn off electrical power at the breaker before beginning.
Q: How do I clean the old adhesive residue from the control panel?
A: Use isopropyl alcohol (rubbing alcohol) or Goo Gone adhesive remover on a soft cloth. Avoid harsh solvents like acetone or lacquer thinner that can damage the control panel plastic. Ensure the surface is completely clean and dry before applying the new keypad.
Q: The ribbon cable looks different from my old one — will it still work?
A: The ribbon cable connector is standardized for H-Series Low NOx control boards. If your old keypad has a different connector style, double-check that your heater is indeed an H-Series Low NOx model. Contact iFJF support with your heater model number if you're uncertain.
Q: How long does a pool heater keypad typically last?
A: In outdoor installations (most common), expect 3-6 years from the original keypad. Factors that shorten lifespan: direct afternoon sun exposure, proximity to pool chemical storage, coastal salt air, and frequent use. Indoor heater keypads typically last 5-10+ years.
Q: Does this keypad require any programming or calibration?
A: No. The keypad is a simple membrane switch assembly — it sends button press signals to the existing control board, which retains all programming and calibration settings. Just plug in and use.
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