Norcold 121X series, Service Manual

Page: 3 / 100

S
ection
1
1
This service manual provides maintenance, diagnostic, and repair information for
NORCOLD
®
model 121X-XX gas absorption refrigerators.
The information, illustrations, and specifications contained in this
publication are based on the latest product information available at the
time of publication. NORCOLD
®
reserves the right to make changes at
any time without notice.
Intended Use
This service manual is reference tool designed for technicians who are
knowledgeable in the theory and operation of gas absorption refrigerators,
liquefied petroleum (LP) gas–propane–systems, and AC/DC electrical systems
as installed in a variety of recreational vehicles (RV).
How this Service Manual is Organized
Section—1: Introduction
This section covers refrigerator model and cooling system identification,
certification, installation reference, replacement part statement, technical support
contact, safety awareness.
Section—2: Specifications
Provides specifications applicable to 121X-XX series refrigerators.
Section—3: Troubleshooting Flowcharts.
This section covers troubleshooting information and flowcharts for faults
displayed through the optical control display assembly screen.
Section 4: Ventilation
This section covers installation and ventilation information to assist technicians
in the inspection and correction of installations not conforming to installation
requirements and guidelines.
Section 5: LP Gas System
This section covers LP gas system pressure requirements, the effects of
low or high LP gas pressure, gas valve information and specifications, gas
valve serviceability, gas valve replacement procedures, gas valve solenoid
coil resistance check, burner tube information, burner and orifice assembly
information, burner and orifice cleaning procedure,
Section 6: Electrical Components
This section covers DC power requirement, polarity of connections, power
board DC fuse, light assembly, light bulb replacement, thermistor wire assembly,
thermistor assembly replacement, divider heater, fans, fans thermostatic switch,
fan replacement procedure, flapper assembly, flapper assembly replacement,
spring pin replacements, AC power requirements, AC power cords, AC fuse, and
AC heaters.
A
bout this
M
AnuAl