What to Do If Your Freeze Dryer Is Not Detecting Heat
If your freeze dryer is showing a “Not Detecting Heat” error, follow these steps to find and fix the issue:
Step 1: Pause Your Batch
- If you’re in the middle of a batch, remove your food and place it in your freezer to keep it safe.
- Cancel the current batch on your freeze dryer.
Step 2: Test the Heaters
- On your freeze dryer’s main home screen, tap the green leaf logo in the top left corner to open the functional testing screen.
- Turn on the toggle labeled “Heater.”
Step 3: Watch the Tray Temperature
- Look at the tray temperature reading on the screen.
Step 4: Is the Tray Temperature Going Up?
- If yes:
- Wait until the tray temperature reaches about 90°F. At this point, the shelves should start to feel warm.
- Gently touch the shelves to check if they’re warming up.
- If the shelves feel warm:
Your shelving unit is heating up as it should! You can start your next batch.
- If you get a “Mid Batch Heater Failure” error on your next batch, your heater relay may be starting to fail. In this case, a Harvest Right support technician may need to help you reconfigure your relay board or arrange a repair.
- If your food isn’t drying or the heat isn’t turning on during batches, it could be a vacuum issue. The vacuum pressure (mTorr) must be low enough for the heat to activate.
- If the shelves do NOT feel warm:
This may be a deeper issue. Please contact Harvest Right support at 801-386-8960 or submit a support ticket.
- If the shelves feel warm:
- If no (the tray temperature is not going up):
- Watch this video to check the reset heat button on the back of your shelf:
- Press the reset heat button, then test the heat again.
Step 5: After Pressing the Reset Button
- Did the shelves heat up?
- If yes:
Great! The problem is resolved.
- If no:
Let’s check the wiring on the back of your shelf. Sometimes a wire just needs to be reconnected.
- If yes:
Step 6: Check the Shelf Wiring
- Make sure the heat is turned off on your functional testing screen.
- Watch this video to see how to check the wiring on the back of the shelf:
- Plug in any disconnected wires, then re-test the heat.
Step 7: After Checking the Wiring
- Did the shelves heat up?
- If yes:
Great! The problem is resolved.
- If no:
It sounds like all wires are connected and the shelving unit did not need to be reset. This is likely a deeper issue that needs technical support.
Please call Harvest Right at 801-386-8960 or submit a support ticket.
- If yes:
