How to Program a Maxitrol Mertik G6R-H3T5 Fireplace Remote (2026 Guide)

The Maxitrol Mertik G6R-H3T5 is a remote transmitter for gas fireplaces with the Mertik GV60 valve and G6R-R3AM receiver. Fireplaces we have confirmed from the maker's own documents: Empire VFSE (2022 manual) and VFIU Loft burners (remote kit R11575); Valor GV60 PLUS (handset G6R-H3T5-ZV, Valor 4001910; receiver Valor 4001911); Valor GV60 MAX (handset 4002251, receiver 4002422); Hearthstone Champlain II, Waitsfield DX and Bristol DX (remote G6R-H3TV4, receiver G6R-R3AU); and the original Regency Horizon HRI3E / Liberty LRI3E insert. For any other brand, send us a photo of the labels on your remote and receiver and we will confirm the part. Programming and pairing is straightforward — but the steps must be followed exactly to avoid frustrating retries.

What You Need

• The G6R-H3T5 transmitter (or G6R-H3T5-ZV if that is the number on your old handset's label)
• Access to the receiver — usually located in the lower control compartment of the fireplace, behind the louver
• Fresh batteries in BOTH transmitter and receiver (replace if more than 1 year old)

Pairing Procedure (Regular G6R-H3T5)

1. Verify batteries: Install a fresh 9 V alkaline battery in the handset and four fresh AA alkaline batteries in the receiver. Old batteries are the #1 cause of pairing failures.
2. Locate the reset button on the receiver. The G6R-R3AM receiver has a small reset button — usually a tiny recessed button near the LED.
3. Press and HOLD the reset button until you hear two consecutive beeps. Release.
4. Within 20 seconds, press the small flame button on the handset (the button with the small flame symbol).
5. Keep pressing until you hear two short beeps — this confirms successful pairing. One long beep means pairing failed or the wiring is wrong, so start again.
6. Test: Press OFF and the large flame button together until you hear a short beep to verify ignition. Press OFF to verify shutdown.

Pairing the G6R-H3T5-ZV

Pairing is identical to the regular G6R-H3T5 procedure above. The -ZV suffix appears on handsets and receivers Valor supplies (for example G6R-H3T5-ZV, Valor 4001910); order the number printed on your own label. There is no separate IGNITE button and no spark module to pair:

1. Complete the standard pairing procedure above.
2. To light the fireplace with any G6R handset, press OFF and the large flame button together until you hear a short beep; the receiver then sparks the pilot.

Common Programming Modes

• Manual mode: Use ON/OFF and flame UP/DOWN buttons for direct control.
• Thermostat mode: Press the THERMO button — the transmitter measures room temp and modulates flame to maintain set temperature.
• Timer mode: Press the SET button + arrows to set a countdown shutdown timer (max 9 hours).
• Eco mode: Reduces flame between thermostat cycles for fuel savings.

Troubleshooting Pairing Failures

• "No beeps from receiver when reset is held": Replace receiver batteries. Verify gas is on (the receiver may not respond if pilot is out).
• "Pairing succeeds but ignition fails": Pilot may be out — check pilot flame. Some fireplaces require pilot to be lit before remote will function.
• "Remote works intermittently": Replace transmitter batteries. Check receiver antenna position (some receivers have a small wire antenna that should hang freely).
• "Multiple remotes interfering": The receiver learns the code of the handset it is synchronized with. Maxitrol does not document using two handsets on one receiver, so plan on one handset per receiver. To synchronize a replacement handset, hold the receiver's reset button until you hear two beeps, release, then press the small flame button on the handset within 20 seconds.

Where to Buy a Replacement G6R-H3T5

If your transmitter is damaged or lost, we carry the full Mertik / Maxitrol product range:

• Mertik G6R-H3T5 Transmitter (regular)
• Mertik G6R-H3T5-ZV Transmitter (the -ZV number Valor supplies)
• Full Mertik Gas Valves & Controls collection
• Maxitrol Gas Controls collection (same products, U.S. brand name)

Frequently Asked Questions

Can I use any G6R-H3T5 transmitter with my fireplace?

Only if your old handset carries the same number. A replacement G6R handset must carry the same part number as the label on your old handset (Maxitrol). Valor, for example, supplies G6R-H3T5-ZV (Valor 4001910) with its PLUS system and a different handset (Valor 4002251) with its MAX system, so check your label before you order.

What is the difference between G6R-H3T5 and G6R-H3T5-ZV?

The -ZV suffix appears on handsets and receivers Valor supplies (for example G6R-H3T5-ZV, Valor 4001910). Both light the fireplace the same way: press OFF and the large flame button together until you hear a short beep, and the receiver sparks the pilot. There is no separate IGNITE button. Order the number printed on your own label.

How long do G6R-H3T5 batteries last?

The handset runs on one 9 V battery, which Mertik Maxitrol recommends replacing after 2 years. The receiver uses four AA batteries; replace them at the start of each heating season unless it runs on a mains adapter. Replace both when the system starts behaving erratically.

Why does my G6R-H3T5 transmitter not pair?

Most common cause: dead receiver batteries. Replace receiver batteries first, then retry the pairing procedure. Second most common: pilot is out — light the pilot before pairing.

Fireplace Choice has been an authorized dealer for 12+ years. For technical questions or warranty support, contact our team.