Instruction/ maintenance manual of the product ST9141A1002 Honeywell
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1 69-0780 LIGHT-EMITTING DIODE (LED) INDICATIONS: LED flashing dim-bright indicates normal operation. LED off when control is powered indicates defective control. LED on continuously when control is powered indicates defective control. LED flashing in a cycle with LED on followed by one or more off pulses indicates the following system errors.
2 Fig. 1—Typical ST9141A1002 wiring connections. UNUSED M5607 G W C Y R FUSE AIR CLEANER LO ML MH HI CIRCULATING FAN STARTING CAP BURNER LIMIT PRIMARY LIMIT PRESSURE SWITCH TRANSFORMER 120 VAC 24 VAC = DENOTES STANDARD TERMINAL. = DENOTES TERMINAL NOT PROVIDED.
3 69-0780 K2 COOL ST9141A ELECTRONIC FAN TIMER R W Y G C THERMOSTAT C N2 CIRCULATING FAN NOTE: DOTTED LINES REPRESENT PRINTED CIRCUIT BOARD WIRING. M5608 ELECTRONIC AIR CLEANER TO 120 VAC POWER SUPPLY.
4 S T9141A1002 Operating Sequence Action System Response Thermostat calls for heat. • Pressure switch confirmed in no airflow position. (If pressure switch shows (W terminal is energized.) airflow, LED flashes three times.) • Combustion air blower is energized.
5 69-0780 Action System Response Primary limit switch string closes. • Circulating fan turns off after the selected heat fan off delay timing. • LED stops flashing. • Normal operation resumes. Primary limit switch string is open • Combustion air blower, circulating fan and ignition system are de-energized.
6 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 Printed in U.S.
An important point after buying a device Honeywell ST9141A1002 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell ST9141A1002 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell ST9141A1002 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell ST9141A1002 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell ST9141A1002 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell ST9141A1002, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell ST9141A1002.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell ST9141A1002. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell ST9141A1002 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
