Troubleshooting
Please see below for common problems to look for when equipment is not running as expected.
If these troubleshooting tips do not resolve the issue, it may be time to contact a professional technician. At Zahn Enterprises Inc., we are available 24/7 to assist with any repair or maintenance needs for your air conditioning, mini split, or refrigeration systems.
Contact us today for expert support.
Air Conditioners
- Unit Won’t Turn On
- Check the Power Supply: Ensure the unit is plugged in and the circuit breaker hasn’t tripped.
- Thermostat Settings: Verify that the thermostat is set to “cool” and the temperature is set lower than the current room temperature.
- Reset the Unit: Some units have a reset button; press it to restart the system.
- Insufficient Cooling
- Clean or Replace Filters: Dirty filters can obstruct airflow, reducing efficiency.
- Check for Blocked Vents: Ensure that vents are open and not obstructed by furniture or curtains.
- Inspect the Outdoor Unit: Make sure the outdoor unit is free of debris and the coils are clean.
- Strange Noises
- Loose Parts: Tighten any loose screws or bolts.
- Fan Issues: Check if the fan blades are bent or obstructed.
- Debris in Unit: Look for debris that might be causing the noise and remove it.
- Water Leaks
- Clogged Drain Line: Clear any blockages in the drain line.
- Check for Ice: Ice buildup on the coils can cause leaks; turn off the unit to let it thaw and check for underlying issues.
Mini Splits
No Power Power Supply: Check the circuit breaker and ensure the unit is plugged in.Remote Control: Ensure the remote has fresh batteries and is functioning properly.
Inadequate Cooling/HeatingFilter Maintenance: Clean or replace filters regularly to ensure optimal airflow.Mode Settings: Make sure the unit is set to the correct mode (cooling or heating) and the temperature is set appropriately.Inspect Indoor Unit: Ensure the indoor unit is not obstructed and can freely circulate air.
Unusual SoundsLoose Components: Inspect the unit for loose screws or parts.
Fan Inspection: Check if the fan blades are clean and free from obstructions.
External Noise: Make sure there are no external objects or debris causing noise.
Leaking WaterDrainage Issues: Ensure the drain hose is not kinked or blocked.
Ice Formation:Check for ice on the coils; if present, allow the unit to thaw and investigate potential causes. Look for ice build-up that may be causing water to leak and address the root cause.
Refrigeration Systems
Unit Not CoolingPower Check: Confirm the unit is plugged in and the circuit breaker hasn’t tripped.Temperature Settings: Ensure the thermostat is set to the desired temperature.Condenser Coils: Clean the condenser coils to improve cooling efficiency.
Excessive Frost Build-UpDefrost System: Verify that the defrost system is functioning correctly.Door Seals: Check for damaged door seals that might be letting warm air in.Proper Ventilation: Ensure proper airflow inside the unit by not overloading it with products.
Strange NoisesFan and Motor Issues: Inspect the fans and motors for any obstructions or wear.Compressor Sounds: Check if the compressor is functioning properly and not producing unusual noises.Vibration: Ensure the unit is level and securely positioned to minimize vibration noise.
Water LeaksDrain Pan: Check if the drain pan is full or overflowing and empty if necessary.Drain Line: Clear any blockages in the drain line to ensure proper drainage.Ice Formation: Look for ice build-up that may be causing water to leak and address the root cause.