Troubleshooting Guide - Chilled Water Cooling Coil - Trane GGAA Installation, Operation And Maintenance Manual

T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
Troubleshooting Guide — Chilled Water Cooling Coil
Problem
No or Insufficient
Cooling
Water in
Conditioned Air
N N o o t t e e : : *Refer to Manufacturer's Installation and Service Manual.
42
Probable Solution
Cause
Circulating pump Repair or replace pump.*
failure.
Chilled water Check chiller.*
temperature not
cool enough.
Air binding (air in Bleed coil.
coil).
Insufficient chilled
1. Circulating pump capacity is inadequate.*
water flow.
2. System piping losses too great.
Insufficient air
1. See air blower troubleshooting.
flow.
2. Clogged coil
Air bypassing coil. Caulk safe off.
Undersized Replace system.*
system, demand
exceeding cooling
system capacity.
Too much outside Check outside air dampers.
air.
Exceeding coil face Reduce unit air flow.
velocity - 600 fpm.
Drain pan p-trap
Clean pan and p-trap.
clogged.
MUA-SVX005B-EN