Troubleshooting Guide
Service, other than routine maintenance, should be performed by a qualified electrical and refri
g
eration professional.
Problem
Cause
Remedy
Check external power supply. Look for blown
fuses or tripped circuit breakers. Reset or replace.
Setting may be too high. Check and reset.
Thermostat may be out of calibration or
defective, Replace.
Check output of transformer.
If not supplying 24 volts. replace.
Replace.
Correct or change.
Tighten connections.
Check power supply for voltage outside
the range of 106 to 126-V on 115-V
units and 187 to 253-V 208/230- V units.
Examine control unit for loose wires and
tighten. Wait four minutes before re-starting.
Clean condenser coil filter.
Clean condenser discharge screen.
Check for defective condenser fan motor.
Replace if necessary.
Restricted duct.
Wait 5 min for timer to allow compressor to restart,
Replace.
Locate leak and repair. Evacuate unit
and recharge.
Check for loose or shorted conductors. Secure
contact between wires and connectors. Repair
or replace as necessary.
Check for shorts, opens. and grounds.
Compressor replacement should be done by a
service technician.
Empty tank and replace.
(See pg. 5 - condensate tank)
Check tank, if full, remove tank. empty and
replace. If unit comes back on replace detective
light. (See pg. 10)
Replace.
Unit must have either condensate pump
or condensate jump plug installed to
operate unit,
Replace fan motor.
Replace capacitor.
Trace and repair.
Open rear access cover, push in red manual
reset button on overload relay, wait 5 min for
compressor to restart.
Unit does not run
Power interruption
Thermostat inoperable
Electrical Panel
-24-Volt transformer defective (TZ-I2A.
24A. 36A and 60A only)
-Contactor coil defective
-Contacts stuck open. burned or dirty
-Wires loose
Evaporator fan runs.
Low voltage
hut compressor and
condenser fan does
not start
Thermostat
High-pressure control switch
turning unit off
Short cycle timer not timed out (TZ-12A.
24A, 36A, and 60A only)
Compressor contactor open or burned
Refrigerant leak - no freon
Loose or defective wires.
Defective compressor
Condensate tank-full
Red indicator light defective
Shorted or open run capacitor(s)
Condensate jumper plug or condensate
pump not installed
Compressor runs.
Open fan motor coil circuit
but fan does not run
Shorted or open fan-motor capacitor
Loose or defective wires
Overload relay tripped ('17,60A only)
TOPAZ' Owner 's Manual
Air Marketing Group LLC
141 kinrierkarnack Rd. Park Ridge, NJ 07656 Tel: 201-782-1782 Fax: 201-782-1783 Web: vwvw.amgair.corn Email: info@amgaircom
