Bradford White MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater MECH-NO-HOT-WATER Error Fix: No Hot Water

Error code MECH-NO-HOT-WATER on the Bradford White MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater means: No Hot Water. The water heater produces no hot water at all. On gas models, check: Is the pilot lit? (Look through the sight glass — you should see a small blue flame.) If not, follow the pilot lighting instructions on the label. Check that the gas supply valve (handle on the gas line) is fully open. Verify the thermostat dial on the gas control is set to a temperature setting (not PILOT or OFF). If the pilot is lit but the burner never fires, the thermopile voltage may be low (see 2-FLASH code). Also check the gas supply — other gas appliances in the home should work. If the burner fires but water is still cold, the dip tube may be broken.

The most successful fix is "Test and Replace Thermopile or Dip Tube" (hard difficulty, ~90 minutes). Estimated DIY cost: $15-$40. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Test and Replace Thermopile or Dip Tube") is rated hard difficulty and takes about 90 minutes. Tools needed: Phillips screwdriver, Multimeter, Adjustable wrench.

DIY cost: $15-$40. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

The Bradford White MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater has 8 other known error codes, including: 1-FLASH (Normal Operation — System OK), 2-FLASH (Thermopile Voltage Low), 4-FLASH (High Temperature / ECO Trip), 5-FLASH (Temperature Sensor Failure), 7-FLASH (Gas Control Valve Electronics Failure), and 3 more.

Error code MECH-NO-HOT-WATER also appears on 8 other Bradford White models: D-W-2-75T6BN Ultra Low NOx, MI50T6FBN 50 Gallon 40,000 BTU Natural Gas Magnum Commercial Water Heater, RE340S6 40 Gallon 4500W Short Electric Water Heater with Glass Lining, RE350T6 50 Gallon 4500W 6-Year Warranty Upright Electric Water Heater, RG240T6N eF Series, RG250T6N 50 Gallon 40,000 BTU 0.67 EF Defender Safety System Gas Water Heater, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.