Friedrich SH20L30-B ユーザーズマニュアル

10

Defective switch (On-Off).

Check continuity across terminals 2 and 3.

Fan capacitor open.

Check by substituting a known good capacitor of the same 
rating.

Inoperative fan motor.

Direct test fan motor.

Incorrect wiring of fan circuit.

Connect per wiring diagram.

Relay open.

Replace Relay.

Check for seized motor bearings.

Rotate by hand, add oil, if noisy, replace.

Bound fan blade or blower wheel.

Adjust for proper clearance.

Selector Switch Relay

Replace selector switch. Replace relay.

Poor installation.

Refer to Installation Instructions for proper installation.

Fan blade striking chassis.

Adjust motor mount to attain proper fan blade and blower 
wheel clearance.

Compressor vibrating.

Check for deteriorated compressor grommets, or missing 
mounting parts.

Loose cabinet parts, improperly 
mounted components, tubing 
rubbing.

Adjust and tighten as required.

Evaporator drain pan overfl owing.

Clean obstructed drain trough.

Condensation forming on bottom 
of base pan.

Evaporator drain pan broken or cracked. Reseal or 
replace.

Water dripping from discharge air 
grilles.

Dirty evaporator coil, or extremely high humidity conditions. 
Clean coil with steam or detergent.

Evaporator drain pan cracked or 
obstructed.

Repair and clean, or replace as required.

Water in center section of base 
pan (compressor area).

Remove condenser shroud, Clean and remove old sealer 
from base pan and shroud. Apply new sealer, reinstall and 
check.

Dirty Condenser coil.

Clean with steam or detergent.

Fan blade and slinger ring 
improperly positioned.

Adjust fan blade to 1/2" clearance from condenser coil.