Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater 32 Error Fix: Outgoing Water Temperature Sensor Failure

The thermistor (temperature sensor) that measures the hot water outlet temperature has failed. It is either reading open circuit, short circuit, or providing values outside the acceptable range. The unit cannot safely control the burner modulation rate without an accurate outlet temperature reading, so it shuts down. On RTGH models, the outlet thermistor is accessible by removing the front cover panel. Disconnect the sensor, measure its resistance with a multimeter (resistance should decrease predictably as temperature increases), and replace if readings are erratic, open (infinite), or shorted (near zero). Use the OEM replacement sensor for proper calibration.

warning2 fixes available✨ Free fix available

Quick Answer

Error 32 on the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater means: Outgoing Water Temperature Sensor Failure. The top-ranked community fix is “Test and Replace Outlet Water Temperature Sensor” (medium difficulty, ~45 min, DIY cost: $15-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · water heater

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many water heater repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$180.

Other Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater Error Codes

False Flame Detection

2 fixes

Abnormal Combustion — Blocked Vent

2 fixes

Ignition Failure — No Flame Detected

2 fixes

Flame Failure — Flame Lost During Operation

2 fixes

Thermal Fuse Activated — Overheat Safety

2 fixes

Overheating — Outgoing Water Too Hot

2 fixes

Abnormal Temperature Rise — Low Water Flow

2 fixes

Condensate Drain / Vent Blockage

2 fixes

People Also Ask About Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater Error 32

What does error code 32 mean on a Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater?

Error code 32 on the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater means: Outgoing Water Temperature Sensor Failure. The thermistor (temperature sensor) that measures the hot water outlet temperature has failed. It is either reading open circuit, short circuit, or providing values outside the acceptable range. The unit cannot safely control the burner modulation rate without an accurate outlet temperature reading, so it shuts down. On RTGH models, the outlet thermistor is accessible by removing the front cover panel. Disconnect the sensor, measure its resistance with a multimeter (resistance should decrease predictably as temperature increases), and replace if readings are erratic, open (infinite), or shorted (near zero). Use the OEM replacement sensor for proper calibration.

How do I fix error code 32 on my Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater?

The most successful fix is "Test and Replace Outlet Water Temperature Sensor" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code 32 on a Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater error 32 myself?

Yes — the top-ranked community fix ("Test and Replace Outlet Water Temperature Sensor") is rated medium difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Digital multimeter.

How much does it cost to repair Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater error 32?

DIY cost: $15-$25. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater have?

The Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater has 8 other known error codes, including: 05 (False Flame Detection), 10 (Abnormal Combustion — Blocked Vent), 11 (Ignition Failure — No Flame Detected), 12 (Flame Failure — Flame Lost During Operation), 14 (Thermal Fuse Activated — Overheat Safety), and 3 more.

What other error codes does the Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater have?

The Rheem Rheem RTGH-95DVLN Prestige 9.5 GPM Condensing Tankless Gas Water Heater has 8 other known error codes:

05 — False Flame Detection (2 fixes)
10 — Abnormal Combustion — Blocked Vent (2 fixes)
11 — Ignition Failure — No Flame Detected (2 fixes)
12 — Flame Failure — Flame Lost During Operation (2 fixes)
14 — Thermal Fuse Activated — Overheat Safety (2 fixes)
16 — Overheating — Outgoing Water Too Hot (2 fixes)
24 — Abnormal Temperature Rise — Low Water Flow (2 fixes)
29 — Condensate Drain / Vent Blockage (2 fixes)

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