Defrost Heater Glass Tube Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-12852
Jlab Export is a leading Defrost Heater Glass Tube Manufacturer,and suppliers in India
This defrost heater is a resistance element inside a glass tube, rated 120 W at 220–240 V. In a frost-free domestic refrigerator it sits below or beside the evaporator and warms the coil during each defrost period. The frost melts and runs off to the drain.
Specifications
| Power | 120 W |
| Voltage | 220–240 V |
| Element | Glass tube |
| Use | Domestic refrigerators |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Defrost Circuit Practicals for Students
The first check is resistance. Students measure across the heater leads with a Digital Multimeter and compare the reading with the value worked out from the rating. For 120 W over 220–240 V that is about 400 to 480 ohms. An open reading means a broken element.
They then wire the heater with the Adjustable Defrost Timer and the Defrost Thermostat on a bench board. Because the defrost thermostat is open at room temperature, the heater only comes on once the thermostat has been chilled. On the Dual-Application Commercial Refrigeration Training Unit, which has an electrical defrost cycle, they watch frost clear from a working evaporator.
Frequently Asked Questions
What resistance should a good heater show?
Work it out from the rating: R equals V squared divided by P. For 120 W that gives about 400 ohms at 220 V and 480 ohms at 240 V. A reading far outside this band, or no reading at all, points to a damaged element.
Can the glass tube be handled when fitting?
Handle it only when cold and with the power off. The glass is fragile, so do not lever it out with tools or let it knock against the evaporator fins. Replace a heater with a cracked tube, since moisture can then reach the element.
Can a heater of a different wattage be used?
Fit one with the same wattage and voltage as the original. A weaker heater may not clear the frost before the timer ends the defrost. A stronger one heats faster than the thermostat can follow and can soften nearby plastic parts.
The heater works, so why does the evaporator still ice up?
Then the fault is likely on the control side. Check that the timer switches over to defrost and that the defrost thermostat closes when cold. A blocked drain can also refreeze the melt water under the coil.
Other Domestic Refrigerator Spares
- Evaporator Fan (shaded pole motor)
- Condenser Replacement For Domestic Refrigerators
- Compressor (1/8 hp, R-600a)
For a quote, use Add To Cart or send us a message through the contact page.
Last updated: 5 November 2026