AcFixMart

Before: Before you start: Power off at MCB, unplug, cover electronics, and move nearby items.

Tools: Tools: Jet pump, soft/fin brushes, wet/dry vacuum, coil comb, multimeter, screwdriver set.

Steps:

• Steps:
• 1. Perform a visual check of the filters, coil, drain, fan, and wiring.
• 2. Carefully remove the front grill and filters, then pre-vacuum any dust.
• 3. Apply the coil cleaner as directed and let it dwell for 5-10 minutes.
• 4. Use the jet pump to wash the condenser and evaporator fins.
• 5. Clean and flush the drain pan and drain line to ensure free-flowing water.
• 6. Wash the filters thoroughly and set them aside to dry.
• 7. Inspect the fan blade and tighten or align it if necessary.
• 8. Reassemble the unit, wipe any excess water, and ensure no water has touched the PCB.
• 9. Power the unit back on and let it run for 15-20 minutes. Check the AT (Air Temperature) difference between the supply and return air, which should be around 10-15°C (ambient dependent).

Qc: QC: No vibration, steady condensate flow, no fin damage, supply vs return air temperature within 10-15°C.

Before: Before you start: Power off, cover indoor PCB and connectors, and cover walls/floor.

Tools: Tools: Same as above, plus an AC cleaning bag/cover and a ladder.

Steps:

• Steps:
• 1. Fit a protective cleaning bag.
• 2. Remove filters and panels.
• 3. Spray cleaner on the coil and blower wheel.
• 4. Jet-wash the indoor unit coil and blower wheel.
• 5. Flush the drain line.
• 6. Clean the outdoor unit (ODU) coil.
• 7. Dry and reassemble the unit.
• 8. Power on and perform a final test.

Qc: QC: Silent blower, no splash, proper drain slope, ODU vibration pads intact.

Before: Before you start: Power off and use dust covers.

Tools: Tools: Soft brush set, vacuum, blower, fin comb.

Steps:

• Steps:
• 1. Remove and wash the filters if a water source is available, or use the blower to remove dust.
• 2. Use a vacuum to remove dust from the coils.
• 3. Use a soft brush to clean the blower wheel and fan.
• 4. Clean the drain mouth to prevent future blockages.
• 5. Inspect and tighten any loose contacts or wiring.
• 6. Apply a basic deodorizer spray.

Qc: QC: No loose wiring, clean airflow, and improved delta T.

Before: Before you start: Measure window opening, check sill strength, and ensure a dedicated socket/MCB.

Tools: Tools: Drill, level, shims, sealant/foam, screws, pliers.

Steps: Steps: Place and level unit, secure with screws, seal gaps, connect power, and test.

Qc: QC: No back-draft, proper tilt, and secure frame.

Before: Before you start: Site survey, decide IDU/ODU locations, plan piping route and drain slope, check power availability, and note pre-charge limit.

Tools: Tools: Core drill, flaring tool, vacuum pump, manifold gauges, nitrogen cylinder, leak detector, and multimeter.

Steps:

• Steps:
• 1. Mount the IDU bracket.
• 2. Prepare copper lines by flaring them.
• 3. Connect and torque the flare nuts.
• 4. Lay and insulate the drain line.
• 5. Wire the interconnecting cable.
• 6. Evacuate the lines to a minimum of 500 microns.
• 7. Open the service valves, check for leaks, and run the unit to commission.

Qc: QC: Micron hold test, correct torque, no sweating on insulation, and tidy routing.

Text: Same as above, but with a heavier bracket/stand, larger pipe sizes (often 3/8" + 5/8"), a stronger power circuit & MCB, and requires two technicians for handling. Always follow OEM charge tables.

Window steps: Window AC Steps: Remove front & screws, slide unit out, cap & pack, and clean opening.

Split steps:

• Split AC Steps:
• 1. Perform a pump-down to store refrigerant in the ODU.
• 2. Disconnect the power supply.
• 3. Disconnect the copper lines and cap the ends.
• 4. Remove the IDU and ODU mounts.

Qc: QC: Refrigerant contained in ODU, ports capped, and no oil/dirt ingress.

Checks:

• Checks:
• 1. Check for dirty filters and coils.
• 2. Check the fan/blower operation.
• 3. Check the supply/return temperature difference.
• 4. Inspect the refrigerant circuit for leaks.
• 5. Check all electrical connections.
• 6. Check for sensor or PCB errors.
• 7. Verify the thermostat setting.

Report: Report: Identify root cause and quote for repair with parts if needed.

Causes: Likely causes: A choked drain line, improper drain slope, iced evaporator coil, or a cracked drain pan.

Steps:

• Steps:
• 1. Verify the unit's tilt and the drain line's slope.
• 2. Use a wet vacuum to clear the drain pan and flush the drain line with water.
• 3. Clean the evaporator coil and drain pan.
• 4. If the coil is iced, diagnose the cause and resolve it.
• 5. If the pan is cracked, use a sealant to fix the leak.

Qc: QC: 2L test pour-free flow and no drips.

Checks:

• Checks:
• 1. Check the indoor blower for dirt buildup or a broken blade.
• 2. Check for loose panels and screws.
• 3. Check for fan imbalance.
• 4. Inspect the compressor mounts and replace them if worn.
• 5. Re-route any touching copper lines.

Fixes: Fixes: Tighten/foam pad/shim, balance blade, replace mounts/bearings, or re-route touching lines.

Safety: Safety: Wear goggles and gloves. Work in a well-ventilated area. Never mix gases. A scale is mandatory.

Steps r410a:

• Steps for R410A:
• 1. Connect the manifold to the service ports and the liquid side of the gas cylinder.
• 2. Slowly open the valve to let a small amount of liquid refrigerant in.
• 3. Close the valve and wait for the pressure to stabilize. Repeat until the target pressure is reached.

Steps r22:

• Steps for R22 (Legacy Units):
• 1. Connect the manifold to the service ports and the vapor side of the gas cylinder.
• 2. Slowly open the valve to let vapor in, watching the low side pressure.
• 3. Verify the superheat to ensure the system is properly charged.

Steps:

• Steps:
• 1. Perform a nitrogen pressure test for leaks.
• 2. Triple evacuate the system to remove all moisture and non-condensables.
• 3. Charge the system accurately by weight using a digital scale.
• 4. Perform a final leak check.

Included: Included: Coil cleaner, drain flush water, electrical tape, zip ties, fasteners, and basic sealant.

Extra: Extra: Copper piping and cable, wall bracket, core cutting, electrical circuit modifications, replacement parts (motors, fans, PCBs, etc.), and refrigerant beyond the pre-charge.