HVAC Heat-Only Wall Thermostat Vertical Universal 9204V ERP

HVAC Heat-Only Wall Thermostat

Vertical mechanical room thermostat for single-stage gas or electric heating systems. Heat-only SPST control; 24VAC, 2 A maximum; 50–90°F dial range. Manufacturer lists Uni-Line 275-40A as a cross-reference and millivolt compatibility with the required anticipator setup. Not a line-voltage baseboard thermostat.

Part identification

• Catalog vendor: ERP
• Part number: 9204V
• Compatible brands or component references: Universal

Cross-reference part numbers

275-40A

Universal is a catalog label, not a guarantee of fit to every appliance, brand or model. Match the original part, full equipment model and configuration before ordering.

Diagnosis

Temperature-control or heat-call problems require diagnosis of the thermostat, wiring and heating system before replacement.

Installation guidance

Disconnect HVAC control power before service. Confirm this heat-only low-voltage thermostat matches the system; never connect it to a line-voltage circuit. Follow the manufacturer's terminal diagram and anticipator instructions for the exact application. Do not jumper across gas-valve or system-control terminals to test. Use a qualified technician if wiring or system compatibility is uncertain.

This is preparation guidance, not a complete model-specific repair procedure.

Manufacturer document for qualified service — confirm document scope and control revision.

Product/application reference 1