Thermador range and stove repair on Oahu
On a Thermador Pro Harmony dual fuel range, the burner spark reignition module runs on 120 VAC, so the range needs a true 120/240 supply, not just 240. We repair these ranges, their rangetop cousins and the circuits behind them.
Utility gas or propane on a Thermador range
| Item | Natural or utility gas | Propane |
|---|---|---|
| Inlet pressure | 6 to 14 in water column | 11 to 14 in water column |
| As shipped | Ready to run | Needs a conversion kit first |
| Regulators | The one supplied with the range | That one plus a separate high-pressure regulator at the tank |
| Who has it on Oahu | Homes on the utility pipelines | Homes off the pipelines, fed from tanks |
| Shutoff and connector | T-handle gas cock, flex connector no longer than 36 in | The same rule |
Where are the wiring diagrams on a Thermador range?
In the toe kick area at the bottom front, where Thermador stores the wiring diagrams and schematics. Leave them there. They travel with the range, and a technician reaches for them first when tracing an electrical fault on a Pro Harmony. The installation manual also asks for about four feet of free cord or conduit behind the range. That slack lets it slide out of the cutout for service.
Pro Harmony dual fuel models compared
The 30, 36 and 48 in versions share a design but not their power draw or their hood needs.
| Model | Width | Breaker per line | Anti-tip bracket | Hood note |
|---|---|---|---|---|
| PRD30 | 30 in | 35 A | Required | 600 CFM with four burners |
| PRD36 | 36 in | 35 A | Required | Follow the chart for the burner layout |
| PRD48 | 48 in | 50 A | Rule is written for 30 and 36 in | Up to 1,100 CFM for the largest setups |
Thermador range numbers
Sources: Thermador Pro Harmony dual fuel installation manual (PRD30, PRD36, PRD48); Thermador ranges care page; CPSC recall 02-097
Why does a heavy Thermador still need an anti-tip bracket?
Because any range can tip, whatever it weighs. Thermador's manual says every 30 and 36 in model must be secured with its bracket. CPSC estimates about 1,700 emergency-room injuries a year from appliances tipping, and it counted 13 deaths from 2000 through 2008 tied to stoves, ovens and ranges, many of them young children. If a range has been pulled out for cleaning or a repair, check that the bracket is engaged again before anyone cooks on it.
