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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.The Johnson Controls A19ABC-11C SPDT Aquastat Immersion Temperature Control, with 1/2″ Well (100 – 240F) Temperature Controller is a Johnson Controls temperature controller for HVAC repair and replacement work. Use it when the part number A19ABC-11C and the listed specifications match the equipment being serviced.
SPDT Aquastat Immersion Temperature Control, with 1/2″ Well (100 – 240F) The Series A19 is a small, compact control with adjustable or fixed differential. Controls supplied with adjustable differential have an internal scale plate indicating increments of differential. The controls are supplied with adjusting lever at minimum differential stamped on the control. To adjust move the lever to the differential required. Models are available with or without external range adjustment and visible scale. External range adjustment may be by screwdriver slot or range adjusting knob.
Captured replacement references include A19ABC-42C, A19ABC-11. Confirm supersession details against the manufacturer parts list.
Reviewed by the SuperArbor Pro Desk: choose this part when the existing component label and unit documentation match A19ABC-11C and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.
It is a temperature controller for compatible Johnson Controls HVAC equipment. Match the part number A19ABC-11C and the equipment service literature before ordering or installing.
Verify the spec set shown for this part: Includes: Well; Features: Direct Immersion; Product Type: Temperature Controller. The replacement should match the existing component and the unit documentation.
Compare the part number A19ABC-11C, the temperature controller description, and any unit model references with the original component and the service manual.
Captured cross-reference data includes A19ABC-42C, A19ABC-11. Verify any supersession directly against the manufacturer parts list before installation.
A qualified HVAC technician should install and test the temperature controller. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.
Disconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.
