Joven Water Heater S10e Not Working
Symptoms:
- No power at all when switched ON. Sometimes EELS (Green LED) will on for a while, then turn off again. The heater (Red LED) will not on, even temperature control knob is turned with water flow in.
- When press "Test/Reset" button, the EELS (Green LED) will turn on and then turn off immediately.
- Suspect the Main Control Board or thermostat malfunction.
Findings:
- Checking the Main Control Board (Power Supply Board), found no issue.
- Trial and error to replace thermostat, see if it is the culprit. After change thermostat, the Joven Water Heater (S10e) is resume back to normal.
Parts Sourcing:
- Found the thermostat written ATT S102, try to look for the original parts, but not available for sale at online store.
- Found another thermostat, KSD303 having same shape and size. Rating at 250VAC/10A, 150°C.
- Use Google Gemini to check compatibility. For a 10A application at 250VAC, both the ATT S102 and KSD303 are technically suitable, as 10A is a standard rating for both series. At this current level, the choice depends primarily on whether you need a direct manufacturer-specified replacement (ATT S102) or a more widely available, generic industrial alternative (KSD303)
Photos:
- Joven Water Heater (S10e) - bought in Year 2017
- Thermostat located at the top of the water tank
- Remove the thermostat (ATT S102)
- Replace with new thermostat (KSD303)
Tools Required:
- Multimeter
- Screwdriver
- Hex wrench (to remove thermostat)
Cost Involved:
- Thermostat (KSD303): US$1
