9330C755 RV AC Control Box Assembly Compatible with Coleman Mach 15
The 9330C755 control box assembly is the controller component an RV air conditioner needs when it runs on a wall-mounted thermostat. The control box receives the temperature signal from the wall thermostat and manages the air conditioner so cooling stays accurate and steady. If the original control box fails or the temperature drifts, this assembly restores dependable temperature control without replacing the whole roof unit.
📋 Key Takeaways
✅ Required Wall-Thermostat Controller: The control assembly an RV air conditioner needs when it uses a wall-mounted thermostat, restoring accurate temperature control without replacing the roof unit.
✅ Direct 9330C755 Replacement: Carries the 9330C755 part number of the original box, dropping into the same wire positions and mounting points for a direct swap.
✅ Coleman Mach Coverage: Compatible with Coleman Mach ductless and horizontally ducted units, plus Mach 15 air conditioners with wall temperature sensors.
✅ Plug and Play Wiring: Turn off power, disconnect the old wires, set the new assembly in place and reconnect every wire to its original position.
✅ Complete Package: One control box, one temperature monitoring cable, two mounting screws, two fixing brackets and three yellow terminal caps.
Features & Benefits
Feature
Benefit (What It Means for You)
Wall-Thermostat Control Kit
For RV air conditioners controlled by a wall-mounted thermostat, this is the required controller assembly — it reads the thermostat signal and manages cooling so the cabin stays comfortable on long trips.
9330C755 Direct Replacement
Matches the 9330C755 part number and layout of the original control box, so the swap needs no cutting or extending of wires.
Coleman Mach Compatibility
Covers Coleman Mach ductless, horizontally ducted and Mach 15 units with wall temperature sensors — verify your AC type against the table below before ordering.
Original-Position Wiring
Every wire reconnects to the position it came from, keeping the installation familiar and low-risk for DIY owners.
Complete Replacement Package
Includes the control box, temperature monitoring cable, two screws, two fixing brackets and three yellow terminal caps — no extra parts to source.
Clear Fitment Guidance
The wall-thermostat requirement is stated up front; units controlled without a wall-mounted thermostat fall outside this fitment, which helps you avoid a wrong purchase.
Compatibility & Cross-Reference
Replaces / Interchange Part Numbers:
Interchange Part Number
System / Brand
9330C755
Control box number of this replacement
This assembly carries the 9330C755 part number used in Coleman Mach ductless, horizontally ducted and Mach 15 systems that run a wall-mounted thermostat, so it drops into the same wiring positions as the original box. It is an aftermarket replacement — not a Coleman OEM part.
Common Applications:
Coleman Mach ductless RV air conditioners with a wall-mounted thermostat
Coleman Mach horizontally ducted RV air conditioners with a wall-mounted thermostat
Coleman Mach 15 RV air conditioners with wall temperature sensors
This control box is designed for systems that already use a wall-mounted thermostat. If your RV air conditioner is controlled only from the unit itself, it falls outside this fitment — check the thermostat type and the part number printed on your old box before ordering.
Specifications
Part Number
9330C755
Product Type
RV air conditioner control box assembly
System Requirement
RV air conditioner controlled by a wall-mounted thermostat
Compatible With
Coleman Mach ductless / horizontally ducted units; Mach 15 with wall temperature sensors
Installation
Plug and play — wires reconnect to their original positions
Package Contents
1 × control box, 1 × temperature monitoring cable, 2 × mounting screws, 2 × fixing brackets, 3 × yellow terminal caps
Why Choose iFJF?
iFJF supplies RV air conditioner control parts factory-direct, so you get the replacement part without the dealership markup. What you can verify before you buy:
✅ Fitment you can check yourself: the 9330C755 part number, the wall-thermostat requirement and the three Coleman Mach fitment cases are stated openly above — read your old box first.
✅ Package transparency: the contents are listed item by item (one control box, one cable, two screws, two brackets, three caps), so nothing is left to guess.
✅ DIY guidance built in: the plug and play steps are straightforward — turn off power, disconnect, swap, reconnect to original positions — with professional help recommended if you are unsure.
✅ Factory-direct value: supply straight from the manufacturer keeps the price fair, without the dealership or middleman markup.
Installation note: always turn off the air conditioner power supply before removing the old control box. Disconnect the wires, set the new assembly in place and reconnect each wire to the position it came from, then restore power. If you are unsure about the wiring or whether your AC uses a wall-mounted thermostat, have a qualified RV technician do the swap or message us before ordering.
Need help finding the right part? Our support team answers fitment questions before you order — support@ifjf.com.
Looking for related parts? Check out our 3106996022 RV AC control relay board for 579/590/595/600 series air conditioners — a matching control part for other RV air conditioner setups.
📂 Browse More: All Electronics Products →
Frequently Asked Questions
Q: Will this control box fit my Coleman Mach RV air conditioner?
A: It is compatible with Coleman Mach ductless and horizontally ducted units, plus Mach 15 air conditioners with wall temperature sensors, and it carries the 9330C755 part number used in those systems. Confirm that your AC runs on a wall-mounted thermostat and read the number on your old control box — check the Cross-Reference table above before ordering.
Q: My air conditioner is controlled from the unit, not a wall thermostat. Will this work?
A: No. This control box is the controller assembly for air conditioners that use a wall-mounted thermostat. Units controlled only from the air conditioner itself fall outside this fitment, so check your thermostat type before ordering.
Q: Does the package include a thermostat or heating element?
A: No. This is the control box assembly for air conditioners that already use a wall-mounted thermostat, so the thermostat itself is not included, and no heating element or heat-strip parts are part of this package.
Q: Is this an OEM or original Coleman part?
A: No. This is a third-party compatible replacement designed to the 9330C755 part number and layout of the original Coleman Mach control box, so the wires reconnect to the same positions for a direct swap. It is not sold as a Coleman OEM part.
Q: How hard is the installation and what should I check first?
A: Installation is plug and play: turn off power, loosen the mounting bolts, disconnect the old wires, set the new assembly in place and reconnect each wire to the position it came from, then tighten the bolts and restore power. Photograph the wiring before removal. If you are not comfortable working with the AC electrical system, have a qualified RV technician do the swap.
Q: How do I know my control box is actually the problem?
A: Common warning signs are the air conditioner not responding to the wall thermostat or cooling that stays inconsistent after the power supply and thermostat settings check out. The same symptoms can come from other parts of the AC system, so confirm the supply and thermostat settings first. If you are unsure whether the model matches, contact us with the number on your old control box before ordering.
Package Includes
1 × 9330C755 control box assembly
1 × temperature monitoring cable
2 × mounting screws
2 × fixing brackets
3 × yellow terminal caps
Common Problems with RV AC Control Boxes — Solved by iFJF
We analyzed verified customer reviews of OEM and aftermarket control boxes in this category. Here is what owners keep complaining about — and how this control box addresses it:
❌ What Owners Complain About
✅ How This Control Box Addresses It
"It says it fits but the wiring did not line up"— Common complaint in this category's reviews
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Original-position wiring with clear stepsThis assembly keeps the 9330C755 layout of the original box, so every wire goes back to the position it came from. Turn off power, photograph the old wiring, then move each wire — no cutting and no guesswork.
"My AC does not use a wall thermostat — I bought the wrong part"— Leading cause of returns in this category
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Wall-thermostat requirement stated up frontThe fitment precondition is stated in the title, the compatibility section and the FAQ: this is the controller kit for air conditioners that already use a wall-mounted thermostat. Confirm your thermostat type and the 9330C755 number on your old box before ordering.
"Not sure how to tell if the control box is bad or how to swap it safely"— Common DIY hesitation
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Checklist-first guidance, not guessworkConfirm the power supply and thermostat settings before replacing the box, photograph the old wiring, and follow the plug and play steps with the power off. If you are not comfortable with the electrical work, have a qualified RV technician perform the swap.
🔎 We read the 1-star and 2-star reviews so you don't have to. This control box is engineered around the fitment and wiring questions owners actually face — not just a spec sheet.
Factory Direct Supply & Wholesale — iFJF is a direct manufacturer of high-performance replacement parts for RV and climate-control systems. Custom specifications and bulk orders are highly welcome. Contact us for exclusive dealer pricing and volume discounts. Backed by ISO 9001:2015 and IATF 16949:2016 quality management system certifications.
Email: support@ifjf.com
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