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FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
The 50M58-707 is a replacement control for two-stage automatic
gas ignition controls employing a microprocessor to continually
monitor, analyze, and control the proper operation of the gas
burner and inducer. The 50M58-707 controls a multiple tapped
induction circulation blower.
Signals interpreted during continual surveillance of the two-
stage thermostat and flame sensing element initiate automatic
ignition of the burner, sensing of the flame, and system shutoff
during normal operation.
Installation should be done by a qualified heating and air
conditioning contractor or licensed electrician.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical codes
and ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could cause
the control to malfunction.
Following installation or replacement, follow manufacturer's
recommended installation/service instructions to ensure proper
operation.
CAUTION
!
Do not short out terminals on gas valve or primary
control. Short or incorrect wiring may damage the
thermostat.
CONTENTS
Description ............................................................. 1
Precautions ........................................................... 1
Installation .............................................................. 2
Specifications ......................................................... 3
Wiring ..................................................................... 4
Operation ................................................................ 6
System Lockout and Diagnostic Features .............. 7
Troubleshooting ...................................................... 8
2-Stage, ECMx, IFC, Goodman
INSTALLATION INSTRUCTIONS
The control incorporates system fault analysis for quick gas
flow shutoff, coupled with automatic ignition retry upon sensing
a fault correction.
Kit Components:
Qty.
Part Number
1
50M58-707
1
0115-0324
1
37-7899
1
37-7897
Failure to comply with the following warnings could
result in personal injury or property damage.
FIRE HAZARD
• Do not exceed the specified voltage.
• Protect the control from direct contact with water
(dripping, spraying, rain, etc.)
• If the control has been in direct contact with water,
replace the control.
• Label all wired before disconnection when servicing
controls. Wiring error can cause improper and
dangerous operation.
• Route and secure wiring away from flame.
SHOCK HAZARD
• Disconnect electric power before servicing.
• Ensure proper earth grounding of appliance.
• Ensure proper connection of line neutral and line
hot wires.
EXPLOSION HAZARD
• Shut off main gas to appliance until installation is
complete.
IMPORTANT NOTE: ELECTROSTATIC DISCHARGE
(ESD) PRECAUTIONS
Before removing the new control board from the static wrap,
it is very important to discharge any static electricity. This
can be accomplished in two methods. Servicer can wear
a ground strap or by touching the metal chassis before
replacing the board.
white-rodgers.com
50M58-707
DESCRIPTION
Description
50M58-707 Control Board
Wiring Harness
Wiring Diagram Label
Kit Installation Instructions
PRECAUTIONS
WARNING
!
PART NO. 37-7897001
2322
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Summary of Contents for White Rodgers 50M58-707
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Page 1: Table Of Contents
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE. DESCRIPTION The 50M58-707 is a replacement control for two-stage automatic The control incorporates system fault analysis for quick gas gas ignition controls employing a microprocessor to continually flow shutoff, coupled with automatic ignition retry upon sensing monitor, analyze, and control the proper operation of the gas a fault correction. -
Page 2: Installation
12. Refer to the DIP switch identification information below for Disconnect electrical power supply to the furnace and verify the 50M58-707 control and set DIP switches to desired safe condition with an electrical tester. positions. Note the position of all connectors and wires. -
Page 3: Specifications
Electronic Air Cleaner Load: 1.0 A max @ 120 VAC troleum, and LP Gas Air Mixtures are all approved for use. Circulator Output : 12 mA RMS @ 30 VAC 50M58-707 TIMING TABLE (All times are in seconds, unless noted otherwise) Event... -
Page 4: Wiring
WIRING WARNING:DISCONNECT POWER BEFORE SERVICING. WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED. ECM MTR HARNESS CIRCULATOR BLOWER EQUIPMENT GND FIELD GND FIELD SPLICE SWITCH (TEMP.) IGNITER SWITCH (PRESS.) OVERCURRENT PROT. DEVICE JUNCTION TERMINAL INTERNAL TO INTEGRATED CONTROL PLUG CONNECTION LOW VOLTAGE (24V) LOW VOLTAGE FIELD HI VOLTAGE (115V) - Page 5 24 VAC transformer line voltage NEUTRAL SIDE HUM N " spade terminal humidifier NEUTRAL side " spade terminal air cleaner NEUTRAL side EAC N * For TWINNING applications, use only 50M58-707 Controls ** Maximum recommended flame probe wire length is 36 inches...
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Page 6: Operation
Motor T4(60Hz) T4(120Hz) SPEED On the 50M58-707 control, the circulator will remain at high heat *Factory default setting speed for 30 seconds following the opening of the second stage gas valve and then is reduced to low heat speed. HEAT OFF DELAY... -
Page 7: System Lockout And Diagnostic Features
In a twinned application, the controls are able to communicate no matter how the transformers are phased. To enable twinning, connect the TWIN screw terminals on the 50M58-707 controls of the furnaces to be twinned to each other using a single wire (14-22 AWG). SYSTEM LOCKOUT AND DIAGNOSTIC FEATURES... -
Page 8: Troubleshooting
TROUBLESHOOTING DIAGNOSTIC TABLE Green Amber Red LED Error/Condition Comments/Troubleshooting Flash Flash Flash Flame sensed when no flame should be Verify the gas valve is operating and shutting down properly. Flame in present burner assemble should extinguish promptly at the end of the cycle. Check orifices and gas pressure.