Question 1

drip tray is rusting through after one season, is this normal? can i just replace the cheap foil?

Accepted Answer

DIAGNOSIS The Z Grills 700D3 utilizes a porcelain-enameled drip tray designed to withstand high heat, but it possesses a critical vulnerability: the edges and the areas where the tray slides into the chassis. Once the porcelain coating chips or scratches—which happens frequently during routine cleaning or when sliding the tray in and out—the raw carbon steel underneath is exposed to the elements. The primary catalyst for the rapid degradation is the combination of salt-heavy rubs and acidic meat drippings (especially from pork and marinated chicken). These substances act as electrolytes, accelerating the oxidation process. When these acids pool in the low points of the tray, they eat through the exposed steel rapidly, creating "pinholes" that allow grease to leak directly into the fire pot and ash collection area. If you see orange-brown flakes or small holes appearing after only one season, the protective barrier has been compromised, and the structural integrity of the tray is failing. FIX While you can replace the tray entirely, the most effective way to stop the rust and protect your investment is to create a sacrificial barrier using heavy-duty foil and a surface restoration. Remove and Strip: Slide the drip tray completely out of the 700D3. Use a coarse 60-grit or 80-grit sandpaper block to aggressively scrub away all surface rust and flaking porcelain until you reach a smooth, metallic surface. Focus heavily on the corners and the sliding rails. Degrease: Use a heavy-duty degreaser or a mixture of white vinegar and dish soap to remove all remaining oils. If the surface isn't chemically clean, the foil will not seat properly and grease will seep underneath it. Apply High-Temp Barrier: Instead of standard kitchen foil, purchase "Heavy Duty" aluminum foil (minimum 24 microns). Cut a single piece that covers the entire top surface of the tray, extending slightly up the side walls. Precision Fitting: Lay the foil over the tray and use a plastic putty knife or a blunt tool to press the foil firmly into the contours of the tray. Ensure there are no air pockets or wrinkles, as these create "pools" where grease collects and eventually burns through the foil. Seal the Edges: Fold the foil over the front and back edges of the tray to create a "wrap" effect. This prevents grease from dripping over the sides of the tray and onto the lower chassis of the grill. Replacement Cycle: Replace this foil lining every 3 to 5 long smokes (12+ hours) or whenever you notice the foil beginning to pit or develop small holes from the acid in the meat. IF THAT DIDN'T WORK Full Tray Replacement: If the rust has created holes larger than 1/8th of an inch, the structural integrity is gone. Order a replacement 700D3 drip tray. Immediately apply the foil method described above to the new tray before the first fire to prevent the cycle from repeating. High-Temp Paint Sealant: For the areas of the tray that are NOT in direct contact with the fire (the sliding rails and outer edges), apply a coat of high-temperature BBQ paint (rated for 1200°F). This seals the raw steel and prevents the "edge-creep" rust that often starts at the perimeter. Stainless Steel Upgrade: If you are tired of the porcelain-to-rust cycle, source a custom-cut 304-grade stainless steel sheet that fits the 700D3 dimensions. While more expensive, stainless steel is naturally resistant to the acidic drippings that destroy the stock carbon steel trays. Deep Clean the Fire Pot: If the tray has already rusted through, grease has likely leaked into the fire pot. Vacuum out all accumulated ash and use a wire brush to clear any hardened grease "slugs" from the bottom of the fire pot to prevent dangerous grease fires. HEADS UP Avoid Non-Stick Foil: Never use "non-stick" or Teflon-coated foils in the 700D3; these coatings can release toxic fumes when exposed to the direct heat of the pellet grill's combustion zone. Check the Gap: Ensure the foil does not hang over the edges so far that it obstructs the airflow or interferes with the sliding mechanism of the tray. Avoid Over-Sanding: While you must remove the rust, do not sand through the remaining healthy porcelain on the center of the tray, as this creates more surface area for rust to start. Post-Cook Maintenance: Always scrape the drip tray while it is still warm (but not hot) to prevent acidic residues from sitting on the surface for days at a time.

Question 2

auger won't turn at all when i try to prime or start, just a clicking sound from under the hopper

Accepted Answer

DIAGNOSIS The auger motor is seized or jammed solid. The clicking is the internal thermal protector tripping because the motor can't move. FIX Unplug the grill. Empty the hopper. Access the auger system. First, try to manually turn the auger shaft. Find the cleanout cap on the back of the grill, remove it, and use a socket on the exposed auger shaft bolt. Turn clockwise. If it won't budge, you have a severe jam. You must disconnect the auger from the motor (usually a shear pin or set screw) and clear the tube. IF THAT DIDN'T WORK If the auger turns freely by hand but the motor still clicks, the motor is burnt out. You need a new auger motor assembly. Match the part number from your old unit. HEADS UP Never force the auger by running the motor. You will burn it out. Always clear jams manually first.

Question 3

my grill won't connect to the app anymore, it just says searching for device, worked before

Accepted Answer

DIAGNOSIS The Wi-Fi module in the grill has lost its configuration or is stuck. A weak signal during setup is the usual culprit. FIX Perform a hard reset on the grill's Wi-Fi. On the controller, press and hold the 'Wi-Fi' button for 5-7 seconds until the icon blinks rapidly. This clears the old network info. On your phone, forget the 'Z Grills_XXXX' network. Close the app completely. Re-open the app and follow the setup steps again, with your phone very close to the grill. IF THAT DIDN'T WORK Ensure your phone is connecting to your 2.4GHz home network, not 5GHz. The grill module does not support 5GHz. Check your router settings. HEADS UP The grill's Wi-Fi range is very short—about 30 feet with a clear line of sight. Walls and interference will break the connection.

Question 4

how do i clean out the ash from the bottom of my pellet grill, it's piled up under the heat baffle

Accepted Answer

DIAGNOSIS Normal combustion ash accumulation. It must be removed regularly or it smothers the fire and causes temperature problems. FIX Get a shop vacuum. Let the grill cool completely. Remove the grates, heat baffle, and drip tray liner. You now see the interior bottom pan. Vacuum out all loose ash. Pay special attention to the channel around the fire pot. Then, remove the fire pot itself (usually two bolts or screws). Vacuum inside the fire pot and the small hole underneath it where the hot rod is. IF THAT DIDN'T WORK If ash is persistently wet and clumpy, you have a grease leak from the drip tray. Ensure your drip tray liner is properly centered and the drain hole at the front of the grill is clear. HEADS UP Never use a household vacuum. Use a shop vac rated for hot ashes. Embers can linger for over 24 hours.

Question 5

temperature swings are wild on my 700d3, set to 225 but it goes to 300 then drops to 180, not stable at all

Accepted Answer

DIAGNOSIS The controller's P.I.D. settings are off or the RTD probe is dirty. Grease and carbon insulate the probe, giving false readings. FIX Clean the RTD probe thoroughly. Let the grill cool. The probe is on the left interior wall. Scrub it with a brass brush or fine steel wool until the metal is shiny. Do not bend it. Also, vacuum out the fire pot and the entire bottom of the cook chamber. Excess ash causes erratic burns. IF THAT DIDN'T WORK You may need to reset the controller's calibration. For many Z Grills models, you hold the 'Menu' and 'Prime' buttons together for 3 seconds. Consult your specific manual for the 700D3 sequence. This resets the learned temperature parameters. HEADS UP Always let the grill preheat for 15-20 minutes with the lid closed before trusting the temperature reading. Lid-open checks ruin the cycle.

Question 6

z grills fan is crazy loud and sounds like it's rattling, not the normal hum, how do i fix the noise?

Accepted Answer

DIAGNOSIS The combustion fan blade is hitting its housing or a foreign object. A pellet or piece of carbon got past the fire pot screen. FIX Unplug the grill. Remove the cooking grates, heat baffle, and drip tray. Remove the fire pot. Look directly behind the fire pot opening—you'll see the fan housing. Use a flashlight and a long, thin tool like needle-nose pliers. Carefully reach in and remove any debris lodged between the fan blades and the housing. Spin the fan blade by hand to check for clearance. IF THAT DIDN'T WORK The fan motor bearings may be failing. The fan assembly is mounted to the back of the grill. You can access it by removing the rear panel. Replace the entire fan motor assembly if it grinds. HEADS UP Do not operate the grill with a rubbing fan. It can overheat the motor and cause a controller failure.

Question 7

pellet grill starts fine then shuts down after 30 minutes and i get an 'erh' message, keeps happening

Accepted Answer

DIAGNOSIS ERH is a feed error. The auger is failing to deliver pellets to the fire pot at the correct rate, causing the flame to go out. FIX This is almost always a jam in the auger tube. Turn the grill off and unplug it. Empty the pellet hopper completely. Use the supplied cleaning rod or a long, flexible wire. Insert it into the auger intake at the bottom of the hopper. Push firmly to clear any compacted sawdust or broken pellet blocking the auger. You may need to rotate the auger by hand (through the cleanout port at the back) while pushing. IF THAT DIDN'T WORK Check the auger motor itself. Listen when you start a startup cycle—you should hear a distinct humming from the motor under the hopper. If silent, the motor or its wiring has failed. HEADS UP Always use high-quality, dry hardwood pellets. Cheap pellets with excess sawdust or moisture are the main cause of auger jams.

Question 8

my z grills 700d3 just shows 'err' on the controller and won't ignite, what do i do?

Accepted Answer

DIAGNOSIS The controller is throwing a high-temperature error. The RTD probe in the cook chamber is likely reading incorrectly or is disconnected. FIX Unplug the grill. Open the main hopper lid and remove all pellets for safety. Remove the cooking grates and heat baffle to access the rear of the cook chamber. Find the RTD probe—it's a thin metal rod sticking into the chamber from the left side wall. Check its connection. The wire runs to the back of the controller. Ensure that plug is fully seated. Plug the grill back in. If 'err' is gone, reassemble. IF THAT DIDN'T WORK The RTD probe itself may be faulty. You'll need to test it for continuity with a multimeter or replace it. Part number is usually ZPG-7003-0011 or similar for the 700 series. HEADS UP Never bypass or run the grill with an 'err' code. It can cause a dangerous over-fire situation in the fire pot.

Z Grills 700D3 Pellet Grill

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