Troubleshooting - Trane TTA120D300AA Service Facts

Troubleshooting

SYSTEM FAULTS
Head Pressure Too High
Head Pressure Too Low
Suction Pressure Too High
Suction Pressure Too Low
Liquid Refrig. Floodback (TXV System)
I.D. Coil Frosting
Compressor Runs Inadequate or No Cooling
Compressor & O.D. Fan Do Not Start
Compr. Will Not Start But O.D. Fan Runs
O.D. Fan Won't Start
Compressor Hums But Won't Start
Compressor Cycles on IOL
I.D. Blower Won't Start
P Primary Causes S Secondary Causes
REFRIGERANT CIRCUIT
ELECTRICAL
P P S
P S S
P P S
P S
P S S
P S S
Literature Order Number
Date
Supersedes
The manufacturer has a policy of continuous product and product data improvement and reserves
the right to change design and specifications without notice. Only qualified technicians should
perform the installation and servicing of equipment referred to in this literature.
P S
S P
S P P
S
P
S P P S
P P
S P P S
P
SS-SVF15A-EN
August 2009
New
P S S
S S S
S P
S P S
P S S
S
S P S
S S P S