First, check to see if the exhaust hose is kinked. Remove exhaust probe hose from analyzer.

• If Low Flow persists, then check filters

• If Low Flow still persists, blow air through both hoses and "flex probe"separately.

First, check that all connections and filter bowl are tight. Remove exhaust probe hose from analyzer, place one of your fingers over the fitting or a similar object that will seal the fitting, and perform another "leak check".

• If it passes, the leak is external, and you should begin a process of elimination to determine where the leak is occurring. The starting point would be to remove the "flex probe", seal the "S-tube", and perform a "leak check". If it continues to fail proceed to check each hose and fittings.

• If it still continues to fail, recheck the filter bowls, then you should place a service call.

Note: Always do a "leak check" test after replacing filters!

If you have a gas calibration failure point one out of range or point two out of range, confirm that the correct bottle values appear in calibration screen. The correct bottle values are found on the front of the gas bottles. The bottle values for the "Zero Air" should be entered as zero (except for the O2 value which should be 20.9). If the bottle values are correct, recycle the analyzer and retry the calibration.

Note: Remember to close the valves on the gas bottle after calibration!

Should this message appear while testing a vehicle, check for exhaust leaks on the vehicle, then perform a "leak check" on the analyzer. If "leak check" fails, then follow leak check failure procedure above.

If you have a condensation problem, check filter for water and pull hose off of the secondary filter bowl to dry the system.

Note: To avoid condensation - avoid prolonged manual mode testing!

If a message appears and says you are not communicating with the VID, go to the Inspection Menu, and select Communication Diagnostics. Perform a Dial Tone Test.

• If it fails Dial Tone test, disconnect the phone line to the analyzer and plug it into a standard telephone, and listen for a dial tone. If there is a dial tone present, recycle analyzer and repeat test.

• If it passes Dial Tone test, Perform a Modem Test, then try the Network Diagnostics to determine if you can access the VID.

If this message appears, do a Gas Cap Calibration on the Pass and Fail Caps.

• If the calibration passes then the vehicle cap is bad.

• If the calibration fails, then check the external fittings for leaks.

Turn the Dyne 220v power off for at least one minute and then back on. If this problem persists then call for service.

Make sure "Lift Override" switch is in the down position. Check air supply to the dyne for pressure of 80 psi. Recycle the analyzer and 220v power.

If the dyne fails coast down check, run the dyne "Parasitics", and then a "Coast Down". If it continues to fail, call for service.

Check the size and length of any extra extension cords. Run the fan at a lower speed.

If the screen freezes or the unit locks up, recycle the analyzer. If there is a consistent path for a blue screen lockup, call service and describe the path to service.

Use the "Shutdown Analyzer" function in the main menu. Shut off the 220v power to the dyne. NOTE: If you shut off your air compressor that feeds air to the dyne, when you turn it on in the morning you will hear a hissing sound. This is not an air leak! It will make this sound until you reach 80 psi.

The above is a list of problems that may be fixed without placing a service call.

Note: When it says to "recycle" your analyzer or 220v power, it means to turn them off, wait at least one minute, then turn back on.

Clean with soapy water.
Do not blow out with air.

Replace dirty and damaged filter as described in the Operator's Manual.

Remove from Analyzer and blow out hoses and probe separately.