Toto spares, Toto parts, Toto spare parts, Spare code no : HH54004S - Controller unit ,Here’s what I...

Toto spares, Toto parts, Toto spare parts, Spare code no : HH54004S - Controller unit ,

Here’s what I found on TOTO spare “HH54004S — Controller unit”, along with interpretation, possible uses, and things to verify.

What is known / confirmed

• HH54004S is listed as a controller for TOTO urinal / sensor flush system
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• Specifically, it’s described as “CONTROLLER FOR UFS800CK, 820CK, 860CK” in a listing.
• In the “TOTO Urinal Infrared Sensor Control System Complete Set,” the HH54004S is given as one of the referenced parts.

So in short: HH54004S is the control module / controller (likely the electronics / logic unit) for TOTO’s urinal infrared / sensor flush systems for certain model lines (UFS800CK, 820CK, 860CK)

Likely functions & role in the system

Because HH54004S is a controller in a sensor / infrared flush system, its role probably includes:

1. Sensor signal processing
2. Receiving input from infrared / proximity sensors in the urinal system to detect user presence or departure, triggering a flush cycle.
3. Timing & logic control
4. Deciding when to flush (immediately after user leaves, or a short delay) and possibly controlling pre‑flush or repeated flushes if needed.
5. Controlling a solenoid / valve actuator
6. It would drive (via low‑voltage output) a solenoid valve (or control valve) to open / close water flow for flushing.
7. Power / voltage management
8. Supplying / regulating power to itself and to the actuator, likely with some power supply / voltage conversion inside.
9. Safety / diagnostic / fault detection
10. It may detect errors (sensor fault, stuck valve, insufficient power) and prevent misbehavior (continuous flush, etc.)

Key parameters & what to check

To ensure compatibility or to replace / repair the unit, the following details are critical (if available):

ParameterDesired info to verifyImportancePower input / supply voltagee.g. AC (e.g. 220 V, 110 V) or DCThe controller must match your electrical supplySensor interface typeInfrared, proximity, active / passive sensorMust match the sensor in your urinal systemOutput drive to valveThe voltage / current output for the valve / solenoidMust match the valve’s electrical requirementsCompatibility with model lineConfirm it’s for UFS800CK / 820CK / 860CK or similarSo it integrates with existing hardwareMounting & physical dimensionsSize, mounting points, enclosure styleTo fit in existing control box / recessWiring / connector pinoutsNumber of wires, connector types, wiring colorsTo match between sensor, power, valve, etc.Error / diagnostic featuresLEDs, error codes, reset proceduresHelps with maintenance and troubleshooting.

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