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For Furrion FWH09A-family tankless RV water heaters, start by recording any wall-controller error code, then switch the heater off, wait five seconds, and switch it back on once. If the fault remains, use the code-specific checks below and contact Furrion or a dealer for persistent system faults. Before maintenance, shut off electrical and LP supplies and let the appliance cool. Internal gas or appliance repairs belong to a certified service technician.
This guide covers models FWH09A, FWH09A-AM, FWH09AFA, FWH09AFA-AM, and FWH09AFA-AB in Furrion/Lippert service manual CCD-0009617, revision 10.05.26. Confirm the model on your unit before applying these codes; other Furrion water-heater models may use different procedures. See the Furrion/Lippert Troubleshooting and Service Manual and Lippert’s water-heater support page.
Before troubleshooting: make the appliance safe
- Record the wall-controller code before resetting so you can report it if the fault returns.
- Turn off electrical and LP supplies and let the heater cool before maintenance. Do not open or service gas components yourself.
- Keep the air inlet and exhaust clear. Exhaust is hot and contains carbon monoxide; never obstruct it or breathe it.
- Do not operate the pressure-relief valve while the unit is hot, or remove the drain plug while the unit is hot or pressurized.
The service manual says repairs must be performed by a certified service technician. If a code persists after its basic checks or the one reset below, stop and contact Furrion, your dealer, or a qualified RV service provider.
How to reset a Furrion error code
- Write down the code shown on the wall controller.
- Switch the heater’s front power switch to OFF.
- Wait five seconds, then switch it back on.
- If the code returns, follow the relevant check below. Do not keep resetting a recurring fault in place of service.
Furrion tankless RV water heater error codes
The following descriptions and actions apply to the FWH09A-family models named in service manual CCD-0009617, revision 10.05.26. Lippert’s RV Water Heater Troubleshooting Guide also lists these codes.
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- SAFETY FEATURES — This water heater is engineered with advanced safety features such as pressure relief valve, over temp protection, blower block protection and auto shut off
- INTELLIGENT CONTROL — The included sleek wall thermostat allows you to set and view your water temperature, time and pressure level and alerts you with an error code when the pressure is low
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| Code | Manual description and likely cause | Safe first check | When to escalate |
|---|---|---|---|
| E0 | Water outlet temperature system fault | Record the code and perform the single five-second reset. | Contact Furrion if it remains. |
| E1 | Flame sense during ignition; insufficient fuel, low inlet pressure, or system fault | Confirm the LP tank has fuel and the gas valves are open. Do not adjust the regulator or repair gas components. | Have qualified service check low inlet pressure; contact Furrion for a system fault or repeated code. |
| E2 | False-flame signal detected; system fault | Record the code and perform the single reset. | Contact Furrion if it returns. |
| E3 | Over-temperature mechanical sensor fault | Run cold water for 10–20 seconds, then restart the heater. | Contact Furrion if the code persists. |
| E4 | Water inlet temperature system fault | Record the code and perform the single reset. | Contact Furrion if it remains. |
| E5 | Air pressure fault; possible exhaust blockage, high wind, or system fault | From a safe position, check for an obvious exhaust obstruction. If strong wind is blowing directly into the exhaust, reposition the RV if practical. | Contact Furrion if unresolved. Never block the exhaust. |
| E6 | Temperature surge; possible cold-water surge or mixing, inadequate water supply or flow, or system fault | Reduce simultaneous cold-water use; check the fresh-water supply, possible hot/cold crossover, air in the lines, inlet screen, and faucet flow. | Contact Furrion if the fault persists after these checks. |
| E7 | Solenoid valve fault; system fault | Record the code and perform the single reset. | Contact Furrion if it returns. |
Diagnose the symptom when there is no useful code
No hot water at the tap
Check that the heater has power, the LP supply is available, and fresh water is reaching the RV. If those supplies are on and the heater still does not produce hot water, read any displayed code and use the code table rather than opening the appliance.
Hot water takes longer than expected
A cold-to-hot crossover can send cold water into the hot side. Check for a mixing valve or crossover at inside and outside fixtures, including the shower head. Lippert also lists very cold incoming water and high elevation as possible contributors. Its guide says Furrion heaters were tested up to 4,500 feet and recommends contacting Furrion for prolonged use above that elevation; this is a manufacturer statement, not an independent test.
Rank #2
- Steady Temperatures: Furrion’s Vortex technology consistently mixes water to your desired temperature. Dual-sensors automatically shut power off if the temperature exceeds a safe limit.
- Replacement Door for Suburban: Specially designed for retrofit applications and use as a replacement door for Suburban 4/6 Gallon Water Heater models. This door fits the required dimension of 16.14 x 16.14 Inches.
- Built for the Road: Engineered for durability and performance on the road, with Furrion VibrationSmart technology and components designed to withstand intense vibration encountered by uneven terrain.
- Warranty & Dimensions: Designed with the highest quality materials, the Furrion RV Gas Water Heater is covered by Furrion's 2-year Warranty. Product Dimensions (W x H x D): 12.81 x 12.62 x 20.75 Inches
- What's in the Box:1x Water heater,1x Wall Controller,Documentation
Low hot-water flow
Hard-water lime scale can reduce flow. The inlet filter screen may also be plugged. Follow the model manual’s decalcification procedure for scale, and use the screen-cleaning steps under maintenance below. Do not improvise chemical treatments.
Water is not hot enough
The service manual lists low gas flow or inlet pressure, water flow that is too high for the incoming-water conditions, excessive scale, or cold water mixing into the hot side as possible causes. It identifies 11 in. wc as the low-pressure condition to investigate; have a qualified technician check gas pressure and consult the RV documentation about supply capacity and installation. Do not adjust gas supply components yourself.
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- High Heating Power: 60K BTU heating power & a 2.4GPM capacity, Furrion RV Gas Water Heater will deliver hot water on demand at consistent temperature even when the ambient temperature drops to 32ºF.
- Steady Temperatures: Furrion’s Vortex technology consistently mixes water to your desired temperature. Dual-sensors automatically shut power off if the temperature exceeds a safe limit.
- Replacement Door for Atwood: Specially designed for retrofit applications and use as a replacement door for Suburban & Atwood 10 Gallon Water Heater models. This door fits the required dimension of 18.11 x 18.11 Inches.
- Built for the Road: Engineered for durability and performance on the road, with Furrion VibrationSmart technology and components designed to withstand intense vibration encountered by uneven terrain.
- Warranty & Dimensions: Designed with the highest quality materials, the Furrion RV Gas Water Heater is covered by Furrion's 2-year Warranty. Product Dimensions (W x H x D): 12.81 x 12.62 x 20.75 Inches
Water appears at the pressure-relief valve
The manual identifies excessive system pressure or lime and dirt under the valve seat as possible causes. For this troubleshooting case, it specifies a maximum pump pressure of 65 PSI and a pressure reducer when central water supply exceeds 65 PSI. Never inspect or operate the valve while the appliance is hot or pressurized; ask a qualified technician if the cause is not obvious.
Clean the inlet screen safely
Only do this when the heater is cool and isolated from electrical and LP supplies, following the exact manual for your model.
Rank #4
- 𝐇𝐢𝐠𝐡-𝐀𝐥𝐭𝐢𝐭𝐮𝐝𝐞 𝐑𝐞𝐚𝐝𝐲: 𝐅𝐥𝐚𝐰𝐥𝐞𝐬𝐬 𝐑𝐕 𝐇𝐨𝐭 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫 𝐭𝐨 𝟗,𝟖𝟎𝟎 𝐅𝐭! The high altitude suitability mode allows the machine to run smoothly even when driving the caravan to the high Denver plateau at 9,800 feet. Staged combustion technology, which controls the amount of flame in summer, prevents the water from getting too hot and saves the limited propane gas available for caravan travel
- 𝐀𝐥𝐥 𝐑𝐕 𝐰𝐚𝐭𝐞𝐫 𝐡𝐞𝐚𝐭𝐞𝐫𝐬 𝐜𝐚𝐧 𝐛𝐞 𝐫𝐞𝐩𝐥𝐚𝐜𝐞𝐝: The Fogatti RV water heater have a wide range of applications. The opening is 13 x 13 inches and the door is 15 x 15 inches. It can replace Suburban and Atwood's 6 gallons tank water heaters, as well as Girard and Furrion's tankless water heaters. If you previously used a 10 gallons tank water heater, it would need to be retrofitted with an 18 x 18 inches door
- 𝐍𝐞𝐯𝐞𝐫 𝐑𝐮𝐧 𝐎𝐮𝐭: 𝐎𝐮𝐫 𝐑𝐕 𝐓𝐚𝐧𝐤𝐥𝐞𝐬𝐬 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫 𝐋𝐚𝐬𝐭𝐬 𝟒𝟎+ 𝐌𝐢𝐧 (𝐯𝐬. 𝟖 𝐌𝐢𝐧 𝐓𝐚𝐧𝐤𝐬). With 55,000 BTU of power, it can produce a maximum of 2.9 GPM of hot water. Some tank heaters can only store up to 6-10 gallons of hot water and run out of hot water in 5-8 minutes, whereas our hot water supply lasts over 40 minutes
- 𝐒𝐡𝐨𝐰𝐞𝐫 𝐁𝐥𝐢𝐬𝐬 𝐟𝐨𝐫 𝐑𝐕𝐬: 𝐓𝐚𝐧𝐤𝐥𝐞𝐬𝐬, 𝐏𝐫𝐨𝐩𝐚𝐧𝐞, 𝐍𝐨 𝐂𝐨𝐥𝐝 𝐒𝐮𝐫𝐩𝐫𝐢𝐬𝐞𝐬. RV tankless water heaters are taking off. Tankless water heaters are better than tanked water heaters for continuous showering of multiple people. There is no need to waste 20-30 minutes waiting for hot water in the middle of the shower, so you can enjoy hot water at all times. It uses propane for heating, so there is no need to worry about running out of power in your caravan
- 𝐀𝐥𝐥-𝐈𝐧𝐜𝐥𝐮𝐬𝐢𝐯𝐞 𝐑𝐕 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫: 𝐁𝐮𝐢𝐥𝐭-𝐢𝐧 𝐕𝐚𝐥𝐯𝐞 + 𝟏𝟓" 𝐃𝐨𝐨𝐫 + 𝟐𝐦 𝐑𝐞𝐦𝐨𝐭𝐞! Fogatti has always thought of you, with a pressure relief valve built into the product, so you don't have to buy and install it separately. And it also comes with a 15 x 15 inches door and an intelligent remote controller up to 2 meters long
- Open the heater door and remove the baffle.
- Unscrew the filter cover counterclockwise and remove the screen.
- Flush debris from the screen; do not damage it.
- Reinstall the screen and cover, replace the baffle, and close the door.
The manual lists 0.32 GPM as the minimum faucet flow for the heater’s operation. If the screen is clean and flow remains inadequate, or an E6 fault continues, seek service rather than dismantling the water system or heater.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Winterization and other maintenance limits
Use the RV manufacturer’s winterization procedure together with the heater manual. If blowing out the heater with compressed air, the manual says not to exceed 50 PSI. Do not substitute an improvised procedure or chemical for the model-specific instructions.
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- 𝐑𝐞𝐩𝐥𝐚𝐜𝐞𝐬 𝐚𝐥𝐥 𝐑𝐕 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫𝐬: There are three door options with two colors, black and white, which can easily refit RV electric water heater and RV tankless water heater. 15"×15", 15"×18", or 18"×18" is required for installation, sold separately
- 𝐈𝐧𝐬𝐭𝐚𝐧𝐭 𝐇𝐨𝐭 𝐖𝐚𝐭𝐞𝐫: Fogatti InstaShower 7 delivers 2.5 gallons of hot water per minute and 48,000 BTU heat output, ideal for meeting the needs of a busy RV family. The tankless feature saves energy by only engaging the burners when water is needed, be it for a hot shower, clean dishes, or washing hands. Compared with tank water heater, there is no need to wait for the water to heat up and replace anode rods frequently
- 𝐅𝐨𝐠𝐚𝐭𝐭𝐢 𝟗𝟖𝟎𝟎𝐟𝐭 𝐀𝐥𝐭𝐢𝐭𝐮𝐝𝐞 𝐑𝐕 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫 | 𝐒𝐭𝐚𝐠𝐞𝐝 𝐂𝐨𝐦𝐛𝐮𝐬𝐭𝐢𝐨𝐧 𝐓𝐞𝐜𝐡 + 𝐀𝐧𝐭𝐢-𝐒𝐜𝐚𝐥𝐝 𝐏𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧. The high-altitude suitability mode allows the machine to run smoothly even when driving the RV at 9,800 feet. Staged combustion technology maintains consistent temperatures by reducing cold spots and scalding. Enjoy endless hot water by adding cold water to reach your desired temperature
- 𝐑𝐕 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫 𝐰/ 𝐏𝐫𝐞-𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐞𝐝 𝟏𝟓𝟎 𝐏𝐒𝐈 𝐕𝐚𝐥𝐯𝐞 & 𝟔.𝟔𝐟𝐭 𝐒𝐦𝐚𝐫𝐭 𝐑𝐞𝐦𝐨𝐭𝐞: Fogatti has always thought of you, built into a high-quality 150 PSI pressure relief valve of the product, so you don't have to buy and install it separately. A 6.6ft-long intelligent remote controller allows easy adjustments of water temperature from 95°F to 123°F
- 𝐅𝐨𝐠𝐚𝐭𝐭𝐢 𝐂𝐒𝐀-𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐑𝐕 𝐖𝐚𝐭𝐞𝐫 𝐇𝐞𝐚𝐭𝐞𝐫 𝐰/ 𝐅𝐨𝐫𝐜𝐞𝐝 𝐄𝐱𝐡𝐚𝐮𝐬𝐭 + 𝐀𝐮𝐭𝐨 𝐒𝐡𝐮𝐭𝐨𝐟𝐟 & -𝟐𝟐°𝐅 𝐀𝐧𝐭𝐢𝐟𝐫𝐞𝐞𝐳𝐞. The tankless RV water heater is CSA certified and has multiple protection features such as a built-in forced exhaust fan on top, stable combustion and automatic gas shut-off for accidental flame failure. Antifreeze protection keeps the system functional even in cold weather
When a technician or replacement is appropriate
Arrange qualified service for a recurring code, suspected gas-pressure problem, internal electrical or sensor fault, or any repair beyond the safe checks above. If the unit must be replaced, first confirm the installed model and the RV’s door dimensions and configuration. Furrion lists the FWH09A 2.4 GPM tankless RV water heater, including model FWH09AFA-AM; its product page states 2.4 GPM and 60,000 BTU and describes a wall thermostat and antifreeze protection for that SKU. These specifications do not establish compatibility with a particular RV. Confirm fit, installation requirements, and compatible parts with Furrion or a qualified RV technician. See the manufacturer’s FWH09AFA-AM product page.
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