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Guardian Brood Heaters
www.lbwhite.com
Owner’s Manual • Guardian
24
Troubleshooting Guide
READ THIS ENTIRE SECTION
BEFORE BEGINNING TO
TROUBLESHOOT PROBLEMS.
The following troubleshooting gude provides
systematic procedures for isolating equipment
problems. This guide is intended for use by a
48$/,),('*$6+($7(56(59,&(3(5621
DO NOT ATTEMPT TO SERVICE THESE BROOD
HEATERS UNLESS YOU HAVE BEEN PROPERLY
TRAINED.
TEST EQUIPMENT REQUIRED
The following pieces of test equipment will be
required to troubleshoot this system with minimal
time and effort.
• Digital Multimeter - for measuring voltage and
resistance.
• Low Pressure Gauge - (L.B. White Part No.
00764) for checking inlet and manifold pressures
of the gas control valve against dataplate rating.
INITIAL PREPARATION
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damage.
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insulation.
Refer to the system operation sequence in this
section to gain an understanding as to how the
brood heater operates. Understanding the operation
sequence of the ignition module and related compo-
nents is essential as it will relate directly to problem
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The ignition control module is self-diagnostic. The red
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upon the problem which is diagnosed. To effectively use
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pattern until the problem is corrected.
Problems
..........................................................
Page
L.E.D. Diagnostic light not on
during a call for heat ............................................... 26
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A. Long Flash (2 seconds ON/2 seconds OFF) ....... 26
B. One Time............................................................. 26
C. Two Times ........................................................... 27
D. Three Times ........................................................ 28
E. Four Times .......................................................... 28
F. Five Times ........................................................... 28
Components should be replaced only after each step has
been completed and replacement is suggested in the
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SPARK IGNITION OPERATION SEQUENCE:
— 220 volts is sent to transformer and to ignition control
terminal L1.
— 24 volts is sent from transformer to the thermostat.
— A call for heat occurs.
— Thermostat returns 24 volts to ignition control terminal
W.
— Red light on ignition control is illuminated.
— Ignition control performs an internal safe start check.
-- Internal components are tested.
-- Ignition control sends 24 volts from terminal PS1 to
the air proving switch.
— Ignition control begins safety lockout timing.
— Ignition control sends 220 volts from terminal IND to
start the fan motor for prepurge.
-- Air proving switch is checked for proper operation.
-- Air proving switch closes and 24 volts are returned
to ignition control terminal PS2.
— Ignition control powers the igniter and igniter sparks.
— Ignition control sends 24 volts to gas control through
high limit switch.
— Ignition occurs.
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-- Igniter spark is discontinued.
-- Gas valve stays open.
WARNING
Electrical Shock and Burn Hazard
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heater unless you are a properly trained and
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operating the unit with line voltage present and
gas on. Use extreme caution when working on
the brood heater.
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property damage, personal injury or death.
Содержание AD060
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