Vaisala PTU300 User's Guide Page 141

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Chapter 5 ______________________________________________________________ Maintenance
VAISALA ______________________________________________________________________ 139
Error Code Error Message Action
26 Communication module
installed in incorrect add-on
module slot
Disconnect the power and change the
communication module to another module slot.
27 Pressure out of valid range Check that assumed pressure is within
measurement range for the transmitter.
28 … 29 Unknown/incompatible
module installed in add-on
module slot 1(or 2)
Ensure that the module is compatible with the
PTU300.
30 Internal analog voltage out
of range
Internal transmitter failure. Remove the
transmitter and return the faulty unit to Vaisala
Service.
31 Internal system voltage out
of range
Internal transmitter failure. Remove the
transmitter and return the faulty unit to Vaisala
Service.
Technical Support
For technical questions, contact the Vaisala technical support:
Fax +358 9 8949 2790
Return Instructions
If the product needs repair, please follow the instructions below to speed
up the process and to avoid extra costs to you.
1. Read the section Warranty on page 16.
2. Contact a Vaisala Service Center or a local Vaisala representative.
The latest contact information and instructions are available from
www.vaisala.com. Addresses of the Service Centers are provided
in section Vaisala Service Centers on page 140.
Please have the following information on hand:
- serial number of the unit
- date and place of purchase or last calibration
- description of the fault
- circumstances in which the fault occurs/occurred
- name and contact information of a technically competent person
who can provide further information on the problem
3. Pack the faulty product in a strong box of adequate size, with
proper cushioning material to avoid damage.
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