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Troubleshooting
SYMPTOM
Controller not ON.
Fan not ON.
Controller temperature
inaccurate.
Slow heating.
Excessive smoke leaking
from hopper.
Err 1
Err 2
Err 3
Err 4
Err 5
Poor Wifi connection
CAUSE
Power not ON.
Not plugged in.
Circuit breaker tripped.
Controller malfunction.
Temperature in cabinet has reached
the set temperature.
Hopper lid open.
Ash door open.
Fan disconnected from controller.
Fan disconnected from wiring harness.
Clean Switches
Err 3
Temperature probe not fully plugged in. Check that connection is fully seated.
Temperature probe is dirty.
Shutdown slides not removed.
Low charcoal.
Grill lid open.
Fan not on.
Loose seal at hopper lid.
Loose seal at ash door.
Loose seal between top and middle
hopper sections.
Temperature probe not fully plugged in. 1. Check that connection is fully seated.
Meat probe malfunction.
Grill overheated.
Charcoal failed to ignite.
Meat Probe Temp above 300°F.
Weak signal.
POSSIBLE SOLUTION
Press the power button on the controller.
Plug controller into power supply and power supply into wall
outlet.
Check wall outlet circuit breaker and reset if tripped.
Masterbuilt Customer Service.
https://www.masterbuilt.com/pages/support
Once the set temperature is reached the fan will turn off. Once
the temperature falls below the set temperature the fan will
restart. The fan will continue adjusting itself automatically to
maintain the set temperature.
For safety, the hopper is equipped with shut-off switches to
prevent the fan from stoking the fire when these doors are
open. Closing the doors will engage the switches, allowing the
fan to continue normal operation.
Check that connection is fully seated.
Press the lid / door switch down rapidly 10x to ensure the
contact points are clean and not sticking. Quickly pressing and
releasing the switch will help clean the contact points.
See below.
Carefully clean temperature probe.
Remove shutdown slides.
Refill hopper with charcoal.
Close grill lid.
See "Fan not ON."
Tighten hopper lid latch.
Tighten ash door latch.
After hopper is cold, remove heat shield and tighten screws
between top and middle hopper sections.
2. Unplug controller from power supply, wait 10 seconds and
reconnect.
Masterbuilt Customer Service.
https://www.masterbuilt.com/pages/support
1. Turn off grill.
2. Check for cause of overheat.
• Grease fire.
• Fan malfunction.
3. Restart grill.
1. Ensure shutdown slides are removed.
2. Ensure hopper lid and ash door are fully closed.
3. Ensure charcoal is not empty.
4. Ensure old ash from previous use has not blocked up the ash
grate. Shake grate to allow all the old charcoal to fall thru it.
5. Restart grill.
1. Using protective gloves, remove meat probe from grill.
2. Unplug from controller.
3. Allow meat probe to cool.
1. Angle the antenna on back of controller to point at the ground
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