Bosch HDI8054U Error Code E310

1. Home ›
2. Bosch ›
3. Range ›
4. HDI8054U ›
5. E310

• Source: Official Bosch service manual
• Reviewed by: Geo Technical Editorial
• Published: March 1, 2026
• Updated: March 15, 2026
• DIY scope: Professional service is recommended.

Error E310 on Bosch : Power supply fault — line voltage at the range is out of specification or an int. Follow the troubleshooting steps below to diagnose and fix this range issue. ## What Error Code E310 Means on a Bosch HDI8054U Power supply fault — line voltage at the range is out of specification or an internal power supply component has failed ## What This Error Means Error code E310 on your Bosch 800 Series Slide-In Range indicates a power supply fault. The control board monitors the incoming AC line voltage; if the voltage measured at the range terminal block is significantly outside the acceptable range, E310 is triggered. For electric and dual-fuel Bosch slide-in ranges, the specification is 240V AC ±10% (216–264V). Below 216V, high-draw components like the bake element will underperform; above 264V, electronic components can be damaged. Common causes include: a tripped or failing double-pole circuit breaker at the service panel (one leg of the 240V supply drops out, leaving only 120V), a loose or corroded terminal block connection at the range, power surge damage to the range’s internal DC power supply board, or broader utility supply voltage fluctuations in the home. Because E310 involves the electrical supply, an electrician should check the service panel and wiring before concluding the range’s internal power supply board has failed. If the house supply is confirmed within spec and E310 persists, the range’s internal power supply module needs replacement. ## Quick Diagnostic Summary | Detail | Value | |--------|-------| | Error Code | E310 | | Severity | High | | Appliance | Bosch HDI8054U 800 Series Dual-Fuel Slide-In Range | | User-Fixable | No — contact a qualified technician | | Applicable Models | HEI8054U, HGI8054UC, HDI8054U | ## Step-by-Step Troubleshooting | Step | Action | What To Do | Expected Result | |------|--------|------------|-----------------| | 1 | Check the circuit breaker at the service panel | Go to your home’s main electrical service panel. Locate the circuit breaker dedicated to the range — it should be a double-pole (two-slot) 40A or 50A breaker. If either half is tripped (in a middle position), reset by pushing fully to OFF then back to ON. If the breaker immediately trips again, stop and call an electrician. | Both poles of the range circuit breaker are fully in the ON position without tripping. | | 2 | Measure voltage at the range outlet or terminal block | With a multimeter set to VAC, measure the voltage at the 4-prong range outlet (slots 1 and 3 = Line 1 to Line 2 = should read 240V; either hot to neutral = should read 120V). If you have a hardwired installation, measure at the terminal block with power on (caution: 240V present — consult an electrician if not comfortable with live voltage measurements). | L1–L2 reads 216–264V AC. L1–Neutral and L2–Neutral each read 108–132V AC. | | 3 | Inspect range terminal block connections | Power off the range at the breaker. Pull the range out from the wall. At the rear, locate the terminal block where the power supply cable connects. Inspect all 4 terminals (L1, L2, Neutral, Ground) for loose screws, corrosion, or burned marks. Tighten any loose terminals to the torque spec in the installation guide (typically 45 in-lb). | All 4 terminal block screws are tight. No corrosion or burn marks on any terminal. | | 4 | Power cycle at the breaker (clear transient fault) | Turn off the range circuit breaker for 5 minutes (allows the control board capacitors to fully discharge). Turn the breaker back on. Power on the range and observe the display. If E310 was caused by a temporary voltage sag (e.g., large appliance startup on the same circuit), it may not return. | E310 does not reappear after a 5-minute power cycle. Range operates normally. | | 5 | Replace internal power supply module if supply voltage is confirmed OK | If house voltage is within spec (216–264V), all terminal connections are tight, and E310 persists after multiple power cycles, the range’s internal DC power supply module has likely failed. This requires ordering the model-specific power supply board and replacing it. Given the electrical work involved, Bosch recommends an authorized service technician for this repair. | New power supply module installed by qualified technician. E310 does not reappear. All range functions operate normally. | ## Frequently Asked Questions ### Can a power surge cause E310? Yes. A voltage spike (from lightning, utility switching, or a large motor starting on the circuit) can damage the range’s internal DC power supply components, causing E310. If E310 appeared immediately after a storm or power event, the internal power supply board is the likely victim. A whole-home surge protector helps prevent this. ### Is E310 common on dual-fuel Bosch ranges? E310 can appear on any Bosch 800 Series slide-in range (electric, gas, or dual-fuel). On gas models, the 120V service powers the controls, ignition, and convection fan. On electric and dual-fuel models, 240V powers the heating elements. A tripped breaker on electric models is one of the most common causes. ### The range shows E310 but the stovetop works fine on gas models — why? On Bosch gas slide-in ranges, the gas burners use a separate 120V igniter circuit. If one leg of the 240V supply has dropped out, the gas burners (running on 120V) may continue to ignite while the oven controls (which need both 120V legs) fail. This is a classic sign of a half-tripped double-pole circuit breaker — one leg is down. ### Should I call Bosch service or an electrician first for E310? Start with an electrician to verify the 240V supply at the range outlet or terminal block. If the supply is within spec (216–264V) and E310 persists, then call Bosch service to diagnose and replace the internal power supply board. Skipping the electrical check and replacing the board first risks damaging a new board with the same supply issue. --- Last Updated: March 2026 · Bosch 800 Series Dual-Fuel Slide-In Range · Error Code E310 ### Is it safe to keep using my Bosch with error E310? If error E310 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the range with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error E310 on a Bosch ? Repair costs for error E310 on the Bosch range depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code E310 mean on a Bosch range? Error code E310 on Bosch range models indicates Power supply fault — line voltage at the range is out of specification or an internal power supply c. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue. ### Is it safe to keep using my Bosch with error E310? If error E310 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the range with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error E310 on a Bosch ? Repair costs for error E310 on the Bosch range depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code E310 mean on a Bosch range? Error code E310 on Bosch range models indicates Power supply fault — line voltage at the range is out of specification or an internal power supply c. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.