TROUBLESHOOTING (Continued)

PROBLEM

POSSIBLE CAUSE

TO CORRECT

 

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.

 

 

FAN MOTOR DOES

Inoperative fan motor.

Direct test fan motor.

NOT RUN.

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.

 

 

 

SWITCH (ON-OFF)

 

 

DOES NOT CUT

Selector Switch Relay

Replace selector switch. Replace relay.

FAN MOTOR OFF.

 

 

 

 

 

 

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.

 

 

NOISY AND/OR

Compressor vibrating.

Check for deteriorated compressor grommets, or missing

VIBRATION.

mounting parts.

 

 

Loose cabinet parts, improperly

 

 

mounted components, tubing

Adjust and tighten as required.

 

rubbing.

 

 

 

 

 

Evaporator drain pan overflowing.

Clean obstructed drain trough.

WATER LEAKS

Condensation forming on bottom

Evaporator drain pan broken or cracked. Reseal or

of base pan.

replace.

INTO ROOM.

Water dripping from discharge air

Dirty evaporator coil, or extremely high humidity conditions.

 

 

grilles.

Clean coil with steam or detergent.

 

 

 

 

Evaporator drain pan cracked or

Repair and clean, or replace as required.

 

obstructed.

 

 

 

Water in center section of base

Remove condenser shroud, Clean and remove old sealer

OUTSIDE WATER

from base pan and shroud. Apply new sealer, reinstall and

pan (compressor area).

LEAKS.

check.

 

 

Dirty Condenser coil.

Clean with steam or detergent.

 

Fan blade and slinger ring

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

 

improperly positioned.

 

 

10

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Friedrich SH20L30-B, SH15L30-B manual FAN Motor does

SH15L30-B, SH20L30-B specifications

The Friedrich SH20L30-B and SH15L30-B are cutting-edge HVAC systems designed to provide superior climate control for residential and commercial applications. These models are engineered with the latest technologies to ensure efficient operation, reliability, and convenience.

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One of the standout features of these models is their multi-stage filtration system. This system effectively removes dust, allergens, and other particulates from the air, promoting a healthier indoor environment. The units are equipped with a washable pre-filter and an activated carbon filter that enhances air quality by reducing odors and harmful volatile organic compounds (VOCs).

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