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PROBLEM
Fan runs constantly
Custom gauge setup
displays "Err" and
returns to "Snd" setup
option
Fans cycle on-off
especially when engine
temp is close to
On/off set point
PAC-2750 specifications
Minimum Fan On Temp
Maximum Fan On Temp
Voltage Input (+12) Range
Key Off Current (+12)
Key On Current (+12)
Ignition
A/C Clutch
OUTPUTS (to turn on relay)
Fan Low, High (maximum)
DAKOTA DIGITAL offers complete service and repair of its product line. In addition, technical consultation is available to help you work through any questions or
problems you may be having installing one of our products. Please read through the Troubleshooting Guide. There, you will find the solution to most problems.
Should you ever need to send the unit back for repairs, please call our technical support line, (605) 332-6513, to request a Return Merchandise Authorization
number. Package the product in a good quality box along with plenty of packing material. Ship the product by UPS or insured Parcel Post. Be sure to include the RMA
number on the package, and include a complete description of the problem with RMA number, your full name and address (street address preferred), and a telephone number
where you can be reached during the day. Any returns for warranty work must include a copy of the dated sales receipt from your place of purchase. Send no money. We will
bill you after repair.
DAKOTA DIGITAL warrants to the ORIGINAL PURCHASER of this product that should it, under normal use and condition, be proven defective in material or
workmanship within 24 MONTHS FROM THE DATE OF PURCHASE, such defect(s) will be repaired or replaced at Dakota Digital's option.
This warranty does not cover nor extend to damage to the vehicle's systems, and does not cover removal or reinstallation of the product. This Warranty does not
apply to any product or part thereof which in the opinion of the Company has been damaged through alteration, improper installation, mishandling, misuse, neglect, or
accident.
This Warranty is in lieu of all other expressed warranties or liabilities. Any implied warranties, including any implied warranty of merchantability, shall be limited to
the duration of this written warranty. Any action for breach of any warranty hereunder, including any implied warranty of merchantability, must be brought within a period of 24
months from date of original purchase. No person or representative is authorized to assume, for Dakota Digital, any liability other than expressed herein in connection with
the sale of this product.
TROUBLESHOOTING (continued)
CAUSE
Controller has an error
Fan off temp too low
Broken/shorted wire to sender
Wrong gauge is selected
Not enough points used
Points not input in correct order
Point entered twice
+12v for controller taken from same
circuit as the fan power +12V (green
wire on relays)
SETTINGS
150° F (65 C)
250° F (121 C)
SUPPLY
6.3 to 22 V
< 0.001 A
< 0.025 A
INPUTS
Off voltage
On voltage
< 2.2 V
< 2.2 V
1.5 A
SERVICE AND REPAIR
Dakota Digital 24 Month Warranty
Check display for error message.
Increase off temp in setup.
Check wire to sender for breaks or shorts and repair.
Select appropriate gauge in setup, or custom calibrate if
your gauge is not supported.
Make sure that at least 4 points of gauge are set
Set gauge points in order from cold points to hot points
Each point set must be different that the point before it
Connect the +12V for the controller to a different circuit
separate from the circuit connected to fan relays.
Typical Coil Current
Relay Contacts Max Current
> 5.6 V
> 5.6 V
SOLUTION
Included relay specifications
0.175 A
70 A (14VDC)
MAN# 650411:B
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