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Instructions (61185) : Three Year Warranty

This document provides instructions for installing a push button control unit for the climate control system of several Mercedes Benz models from 1988 to 1991. It is recommended to replace the auxiliary water pump before installing the new unit. Steps 1 and 2 describe how to test the auxiliary pump by checking resistance and current draw values using a multi-meter. If the pump does not meet the specified values, it should be replaced or the warranty will be void. Troubleshooting tips are provided for common problems with the original and new climate control units.

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56 views2 pages

Instructions (61185) : Three Year Warranty

This document provides instructions for installing a push button control unit for the climate control system of several Mercedes Benz models from 1988 to 1991. It is recommended to replace the auxiliary water pump before installing the new unit. Steps 1 and 2 describe how to test the auxiliary pump by checking resistance and current draw values using a multi-meter. If the pump does not meet the specified values, it should be replaced or the warranty will be void. Troubleshooting tips are provided for common problems with the original and new climate control units.

Uploaded by

programainc
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Instructions (61185)

THIS UNIT FITS ONLY:

300SE

88 - 91

300SEL 560SEC

88 - 91 88 - 91

350SD TURBO 1991 560SEL 88 - 91

420SEL 88 - 91

It is strongly recommended the Auxiliary Pump is changed prior to installing Push Button Control Unit.

Perform steps 1 - 2 prior to installation.


1. 2.

Turn ignition off and disconnect (L) Left and (R) Right connectors from Climate Control Unit. Auxiliary water pump test. Remove connectors: Set meter to Ohms: (+) L pin 13 (-) L pin 10 = greater then 6 ohms Set meter to Amps: (+) L pin 10 (-) R pin 12 Turn key to the run position. Current draw = less than 1.5 amps.

IF NOT, REPLACE AUXILIARY WATER PUMP OR WARRANTY IS VOID.

ProgRama needs your experience and inputs to make a better product. Phone or email tech support today 8:30 am to 5:00 pm EST, with your idea, question or problem.

1 800 668-8843

THREE YEAR WARRANTY


1- Call your Wholesale Distributor for a replacement part. 2- If you have difficulties to obtain a replacement, call ProgRama, Inc. We offer up to 48 hrs. turn-around time for bench testing service. 3- Visit our web site www.programainc.com and become familiar with our products and services.

Warning ! Return Core In ProgRama Box for Proper Core-Deposit Refund


Climate Control Revised 01/05/02 #61185

GENERAL TROUBLESHOOTING NOTES


ORIGINAL UNIT PROBLEMS

SymptomsTest/Suspect Problems
No control, flaps, heat, A.C. Air outlet temperature too low when heat is at max. Check fuse.

Solution
Replace fuse. Replace Auxiliary Water pump.

Auxiliary water pump test. Remove connectors. Set meter to ohms. (+) L pin 13 (-) L pin 10 = greater than 6 ohms. Set meter to Amps: (+) L pin 10 (-) R pin 12. Turn key to the run position. Current draw = less than 1.5 amps.

Higher or colder temperature desired. Auxiliary fan on all the time.

Mono valve defective. (+) L pin 13 to 19 ohms.

Temperature switch open below 105 C.

NEW UNIT PROBLEMS Symptom


Low or no A.C. output.

Test/Suspect Problem Solution


Replace sensor.

Evaporator Temperature sensor (-) R pin 10 (+) R pin 4 = 9.5k ohms @ 77 Fahrenheit.

In Car Temperature sensor. (-) R pin 10 (+) R pin 2 = 9.5k ohms @ 77 Fahrenheit.

Outside Temperature sensor. (-) R pin 10 (+) R pin 9 = 2.4k ohms @ 77 Fahrenheit.

A.C. Cutout Control Unit defective. A.C. Compressor low pressure switch/low refrigerant pressure.

Faulty sensors, test as listed above. A.C. Cutout Control unit defective. Blower cannot be switched off. Blower fluctuates up and down, or runs at half speed. Blower Regulator defective. Blower Regulator defective. Interior Temperature sensor ventilation not working.

Thank you for buying a quality part from ProgRama, Inc of Boca Raton, Florida !
Climate Control Revised 01/05/02 #61185

Temperature Control inaccurate.

Heater Core temperature sensor. (-) R pin 10 (+) R pin 7 = 9.5k ohms @ 77 Fahrenheit.

Engine Coolant Temperature sensor. (-) R pin 10 (+) R pin 8 = .9 - 1.8k ohms @ 140 Fahrenheit.

Engine Coolant Temperature sensor. (-) R pin 10 (+) R pin 8 = .9 - 1.8k ohms @ 140 Fahrenheit.

Outside Temperature sensor. (+) R pin 9 10 = 2.4k ohms @ 77 Fahrenheit

(-) L pin 9 = 11 (-) R pin

Replace Mono valve. Replace sensor. Replace sensor. Replace Switch.

Replace sensor.

Replace sensor.

Replace sensor.

Replace A.C. Cutout Control Unit. Repair as needed. Replace sensor.

Replace sensor(s). Replace as needed. Replace as needed. Replace as needed. Replace Aspirator Blower.

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