Why is my hot melt glue gun not heating?
Check the simple things first: power, the on/off switch, and on LCD models whether the temperature control is on (the display shows three dashes when it is off). On MS 80 and MS 200 guns, check the thermostat screw is not turned fully left. If the display blinks 2.5.9 or shows 999, see the codes below.
How long should heat-up take?
About 5 minutes for the MS 200, about 10 for the MS 80, 3 to 10 minutes for the air-driven guns, and about 20 minutes for a cartridge gun with a cold cartridge.
What the display codes mean
| Display | Meaning | What to do |
|---|---|---|
- - - |
Temperature control is off | Press the button to switch it on |
| Flashing digits | Still heating | Normal. Wait |
2.5.9, blinking |
Temperature sensor broken or disconnected | Switch off at once. Needs a repair |
999 |
Voltage swing in the mains | Unplug, wait 20 seconds, plug in again. If it stays, send it in |
| Falls to 130 °C, then climbs (air-driven guns) | Overheating or faulty regulation | Switch off at once. Needs a repair |
Is the displayed temperature exact?
No. The display is not calibrated, and the outside of the tank differs from the inside. If you need an exact figure, use a calibrated thermometer.
When it needs a repair
A damaged thermostat (MS guns) or any of the switch-off codes above. Contact us: we will tell you whether we repair it in Mumbai or with Reka.
Questions.
What does three dashes on the display mean?
The temperature control is switched off. Press the button to switch it on.
What does 999 on a Reka display mean?
A voltage swing in the mains. Unplug, wait about 20 seconds and plug in again. If 999 stays, send the gun in.
Still stuck? Tell us.
Send the gun model, serial number (on the nameplate), purchase date and a photo or short video. We will tell you the fix, send the part, or arrange the repair.
+91 98198 09954 · call or WhatsApp · Mon–Sat 9:00–17:30