Jandy R0988700 Ignition Controller Board — JXiQ and JXiQ ASME Heaters, Models 200, 260 and 400 — Genuine OEM

The Jandy R0988700 Ignition Controller Board is the genuine OEM control board for JXiQ and JXiQ ASME Compliant gas pool and spa heaters. Jandy's own manual describes its job plainly: it "provides energy for ignition, monitors flame quality and controls the gas valve." It is both the ignition module and the gas-safety control — the part that closes the valve when flame is not proven.

⚠️ JXiQ Only — a JXi Takes a Different Board

This is the most common ordering mistake on this part. Check that your heater's data plate reads JXiQ, not JXi.

• JXiQ (launched 2024) and JXiQ ASME Compliant, models 200, 260 and 400 — this board, R0988700
• JXi or LXi heaters of any year — order R0456900 instead

Jandy's JXiQ manual and the JXi parts sheet list these boards against mutually exclusive heaters; they are not interchangeable, and some retailers list them wrongly against both. Fitment is also subject to the component originally fitted and your heater revision, so the authoritative check is the part number on the board currently installed. This one is marked R Kit # R0988700 with board revision H0774700 Rev C.

One board covers the whole JXiQ family — 200k, 260k and 400k BTU, natural gas and propane, standard and ASME, copper and cupronickel.

The Ignition Timing Sequence

These are the board's published timings. They are the fastest way to work out where a heater is failing — time the fault and you know which stage it died at:

• Pre-purge: 15 seconds
• Heat up: 40 seconds
• Ignition: up to 7 seconds
• Inter purge: 15 seconds
• Post purge: 45 seconds
• Lockout: after 3 successive failed ignition attempts

A heater that purges and stops at about 15 seconds without the igniter glowing is behaving differently from one that completes a 40-second heat-up and then fails to prove flame — and the two point at different parts.

Before You Buy a Board, Read the LEDs

A control board is the most expensive part in the ignition chain and often not the actual fault. This board carries three status LEDs:

• Ignition control LED: input power present
• RS-485 LED: communicating with automation
• User interface LED: communicating with the UI

If the user interface LED is dark, the fault may be the UI (R0988800), its harness (R0989000) or the main harness (R0988900) rather than the board. If the heater tries to light and locks out after three attempts, suspect the igniter (R0457502) or a blown onboard fuse (R1009500) first — that fuse kit is under $20 against a board costing many times more.

What Ships

A single OEM replacement ignition controller board. Jandy does not publish a packing list for this part. The fuse is not included — it is a separate part number, R1009500 — and the wiring harness (R0988900) is separate too.

Key Features

• Genuine Jandy OEM: the factory board, with the firmware and connector layout the JXiQ platform expects.
• Ignition and gas safety in one: runs the sequence and closes the valve if flame is not proven.
• Onboard diagnostics: three status LEDs for power, RS-485 and user interface communication.
• Covers six heater models: JXiQ and JXiQ ASME in 200, 260 and 400, gas or propane.
• Dual voltage: 120/240 VAC at 5 A, 50/60 Hz.
• UL and CSA listed: UL 60730-1, UL 60730-2-5, CSA E60730-1, CSA C22.2 No. 60730-2-5.

Specifications

• Part Number: R0988700
• Jandy Description: Ignition Controller Board (manual H0780200, section 13.5, key 8)
• Board Revision: H0774700 Rev C
• Brand: Jandy (Zodiac / Fluidra)
• Fits: JXiQ Heater models 200, 260, 400
• Also Fits: JXiQ ASME Compliant Heater models 200, 260, 400
• Does Not Fit: JXi and LXi heaters — those use R0456900
• Input Power: 120/240 VAC, 5 A, 50/60 Hz
• Igniter Output: 5 A at 120 VAC
• Auxiliary Output: 5 A at 240 VAC
• Louver Output: 5 A at 240 VAC
• Ambient Range: 0°F (-18°C) to 176°F (80°C)
• Communication: RS-485
• Certifications: UL 60730-1, UL 60730-2-5, CSA E60730-1, CSA C22.2 No. 60730-2-5
• Country of Origin: United States
• Fuse (not included): R1009500
• JXi / LXi Equivalent: R0456900

Installation and Safety

The board's own label carries the warning "High voltage. Disconnect wiring before servicing." Line voltage of 120 or 240 VAC is present, and the board sits beside the voltage selector board behind the front jacket panel — disturbing that selector will miswire a dual-voltage heater. The label also specifies that external power may be provided only to terminals 7, 11 and 12.

Jandy's manual instructs: "Label all wires prior to disconnection when servicing controls" and "verify proper operation after servicing." Because this board is what shuts off gas when flame is not proven, a wrong or mis-installed board is a gas-safety defect, not merely a no-heat fault. Installation by a licensed, qualified pool heater technician is required — and it is a condition of the warranty.

Frequently Asked Questions

Will this fit my JXi heater?

No. JXi and LXi heaters use R0456900. This board is for JXiQ only. Some retailers list both boards against both heaters, which is wrong — Jandy's own manuals assign them to mutually exclusive models. Read the data plate.

How do I know it is the board and not something cheaper?

Check the three LEDs and time the fault against the sequence above. No power LED points at supply or the transformer; no RS-485 or user interface LED points at the UI or a harness; a lockout after three ignition attempts points at the igniter, the fuse or the gas train before the board.

Is the fuse included?

No. Jandy supplies it separately as R1009500, a fuse kit specifically for this board. A blown fuse is a common cause of a dead board and costs a small fraction of a replacement.

Is this for natural gas or propane?

Both. One board covers the whole JXiQ family regardless of fuel — the fuel difference lives in the gas valve and orifices, not the controller.

Does it fit the ASME version?

Yes. Jandy's parts list names both the standard and ASME Compliant JXiQ in 200, 260 and 400.

Will it run on 120V or 240V?

Either. The board is rated 120/240 VAC at 5 A, 50/60 Hz. The heater's voltage selector board, which sits next to it, is what sets the configuration — do not disturb it while changing the controller.

Can I fit it myself?

No. This is a gas-safety control carrying line voltage inside a gas-fired appliance. Jandy's warranty requires installation by a licensed, qualified contractor, and a DIY install voids coverage.

What is the warranty?

Ninety days from date of retail purchase, per Jandy's Limited Warranty for replacement parts. Jandy's online exclusion does not remove it — parts are specifically carved out of that exclusion.

California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.