SPF Depot stocks replacement TSU (Temperature Sensing Unit) sensors used on Graco, PMC, BOSS, Gusmer and other spray foam proportioners. The TSU monitors heated hose temperature and provides critical feedback to the machine's control system. A faulty TSU can cause hose heat problems, temperature fluctuations, inaccurate readings and E04 thermocouple-related fault codes.
Common symptoms of a failed TSU include:
- No hose heat
- Inaccurate hose temperature readings
- Hose heat shutdowns
- E04 FTS or Thermocouple Not Connected faults
- Temperature fluctuations
Browse our TSU temperature sensors below for Graco Reactor, PMC Polymac, BOSS and other spray foam equipment.
