Thermo Pride OH16-125 User manual

MO-460
ECN 5577-MA 190924
ECM OPERATION MANUAL
FOR USE WITH MODELS:
OL16-125 OL20-151
OH16-125
: IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL, A
FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF
LIFE.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF
THIS OR ANY OTHER APPLIANCE.
INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER, SERVICE AGENCY
OR THE GAS SUPPLIER. (REFERRED TO IN THESE INSTRUCTIONS AS A QUALIFIED HEATING
CONTRACTOR).
PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT ITH THE
HOMEO NER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE
PERSONNEL.
THERMO PRODUCTS, LLC.
BOX 237
DENTON, NC 27239
PHONE: [phone]
MADE IN USA

All installations and services must be performed by qualified service personnel.
i
INDEX
SECTION BEGINNING PAG
I. BLO ER CONTROL INFORMATION 1
A. TERMINAL DEFINITIONS & FIELD IRING 1
B. IRING & S ITCHES 2
C. INPUTS 4
D. OUTPUTS 4
E. OPERATING MODES 5
F. CFM TABLES 7
G. ECM SPECIFIC REPLACEMENT PARTS 8
III. ECM TROUBLESHOOTING 8
A. DIAGNOSTIC FEATURES 8
B. GENERAL GUIDELINES TO TROUBLESHOOTING GE ECM 9
C. TROUBLESHOOTING CHARTS 12

All installations and services must be performed by qualified service personnel.
1
I. BLOWER CONTROLLER INFORMATION
A. TERMINAL DEFINITIONS & FIELD WIRING
Burner Harness Connector P1
Pin 1 – Limit switch connection.
Pin 2 – 120 VAC Line connection.
Pin 3 – Burner pilot contact.
Pin 4&5 – 120 VAC Neutral connection.
Pin 6 – Burner pilot contact.
Pin 7&8 – From oil primary control.
Pin 9 – Limit Switch Input (LSI).
Field iring to Burner
Pilot (Tstat) Neutral Line
Harness ires
Beckett Connections
Riello Connections
Yellow ires hite Red
T-T terminals hite Black
T-stat terminals hite Black
Thermostat/Humidistat connections
"C" Common/ground
" " Thermostat call for heat
"R" 24 VAC to thermostat
"G" Thermostat call for fan
"Y" Thermostat call for cool
“DEHUM” Humidistat call for dehumidification (TXV systems ONLY)
Thermostat/Humidistat connections for 2-Stage control
"C" Common/ground
" 1" T-Stat call for heat (low fire)
" " T-Stat call for heat (high fire)
"R" 24 vac to T-Stat
"G" T-Stat call for fan
"Y" T-Stat call for cool
“DEHUM” Humidistat call for dehumidification (TXV systems ONLY)
ECM control outputs
Pin 1 - Speed Common Pin 4 – Blower Enable
Pin 2 - Speed Output Pin 5 – COOL Enable
Pin 3 – Motor CFM Pin 6 – “R” Output
Male quick connect terminals.
"S1-3” 120 VAC Hot
“N1-7” 120 VAC Neutral
“EAC” Electronic Air Cleaner (120 VAC) connection.
“HUM” Humidifier connection (120 VAC).
"FAN" Fan On Signal
“X” 24VAC from transformer.
“C” 24VAC common from transformer.
"CC" Compressor Contactor

All installations and services must be performed by qualified service personnel.
2
"CC_COM" Compressor Contactor Common