Description
3106996022 Heat & Cool Analog Control Relay Board for RV Air Conditioners — 579, 590, 595 & 600 Series
When your RV's air conditioner stops responding to the thermostat — no cooling, no heat, or the fan won't kick on — the analog control relay board is the #1 suspect. This 3106996022 replacement board is a direct plug-and-play fit for Dometic and compatible RV rooftop AC units in the 579, 590, 595, and 600 series. No programming, no special tools — just swap the board, reconnect the harnesses, and you're back to comfortable temperatures.
🔧 Diagnostic Check: Before replacing the board, verify: (1) 12V DC and 120V AC power at the unit, (2) thermostat is calling for cooling/heating, (3) no blown fuses on the existing board. If power is present and the thermostat is calling but nothing happens, the relay board is the likely culprit.
Key Features
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Exact OEM Replacement — Direct replacement for Dometic 3106996022 and 3311924 analog control relay boards. Same connector pinouts, same relay configuration, same mounting pattern. No wiring modifications needed.
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Plug-and-Play Installation — Remove the old board (typically 4–6 screws), disconnect the wire harness connectors, connect them to the new board in the same positions, and secure. Most installations take 20–30 minutes with just a screwdriver.
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Full Function Control — Controls all standard RV AC functions: compressor (cooling), heat strip (if equipped), fan (high/low/auto), and reversing valve (heat pump models). Tested to match OEM relay timing and sequencing.
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Heavy-Duty Relays — Industrial-grade relays rated for the constant cycling of RV AC compressors and fan motors. Silver alloy contacts resist arcing and welding — a common failure mode on cheaper replacement boards.
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Conformal Coating — Circuit board coated with moisture-resistant conformal coating to withstand the humidity, condensation, and temperature swings of rooftop RV installations.
Compatibility — RV Air Conditioner Series
| Series |
Models Covered |
Applications |
| 579 Series |
All 579-series analog control units |
Travel trailers, pop-ups, small motorhomes |
| 590 Series |
All 590-series analog control units |
Mid-size travel trailers, fifth wheels |
| 595 Series |
All 595-series analog control units |
Large fifth wheels, Class A motorhomes |
| 600 Series |
All 600-series analog control units |
Premium Class A motorhomes, high-BTU units |
Specifications
| Specification |
Value |
| OEM Part Numbers |
3106996022, 3311924 |
| Control Type |
Analog relay board (non-digital) |
| Functions |
Compressor, fan (high/low/auto), heat strip, reversing valve |
| Input Voltage |
12V DC control / 120V AC load |
| Mounting |
Direct replacement — same screw pattern as OEM |
Symptoms of a Failed Control Board
- Thermostat clicks but compressor doesn't start
- Fan runs but compressor never engages in cool mode
- AC works intermittently — runs for a while then shuts off
- Heat mode doesn't respond (heat strip or heat pump models)
- Burned smell or visible scorch marks on the board
- Fan stuck on one speed regardless of thermostat setting
- Unit completely unresponsive to any thermostat command
Why Replace Instead of Repair
While individual relays can sometimes be replaced by someone with soldering skills, a burned relay often indicates broader heat damage to the board — traces, solder joints, and adjacent components may be compromised. A new board restores ALL functions with factory-fresh relays and traces. At roughly the cost of one service call from an RV tech ($100–$150 minimum), this board pays for itself on the first repair.
Frequently Asked Questions
Q: How do I know if my AC uses this control board?
A: Check your RV AC unit's model/series label, typically located on the interior ceiling assembly or inside the rooftop unit's electrical compartment. If the model number begins with 579, 590, 595, or 600, this board is compatible. You can also visually match your current board to the product images — the connector layout and relay positions are distinctive.
Q: Is this board compatible with digital thermostats?
A: This is an analog relay board designed for basic analog thermostats and some early digital wall thermostats. It is NOT compatible with modern multi-zone digital control systems (CCC/CCC2 thermostats) — those require a different control board. Check your thermostat type before ordering.
Q: Can I install this myself or do I need an RV technician?
A: If you're comfortable with basic electrical work — disconnecting and reconnecting wire harnesses, using a screwdriver — you can install this board yourself in 20–30 minutes. Always disconnect shore power AND battery before working on any RV electrical component. Take a photo of the existing wire connections before disconnecting them.
Q: Does this board support a heat strip or heat pump?
A: Yes. The board includes relay circuits for heat strip and heat pump reversing valve control. If your RV AC unit has a heat strip installed, verify the electrical connections match the board's heat strip terminal — most installations use the same connector.
