Vaisala HMM100 - Manual (Page 65)

Chapter 6 ____________________________________________________________ Troubleshooting
VAISALA ________________________________________________________________________ 63
Problem or Message Likely Causes and Solutions
Cannot connect to serial line,
current serial settings of the
module are unknown.
Perform the following steps to connect:
1. Set your terminal settings to 19200 8 N 1 (the
default settings of the module).
2. Connect to the service port of the module.
2. Power up the module, and type "z" on the serial
line at least five times.
4. The module will come online with the default
settings, and with the text SERVICE MODE.
5. Use the SERI command to set the desired
serial settings, and use the SAVE command to
save them.
Any of the following errors is
active:
- Program checksum error
- Parameter storage
checksum error
- Sensor coefficient checksum
error
- Current settings checksum
error
- Default settings checksum
error
- Log corrupted
- Resistance measurement
Internal error. Perform the following steps:
1. Reset or power cycle the module. Check if the
error is gone.
2. Return the module to factory settings using the
FRESTORE command. Check again.
3. If the error is still active, contact a Vaisala
service center.
Technical Support
For technical questions, contact the Vaisala technical support by e-mail at
[email protected] . Provide at least the following supporting
information:
- Name and model of the product in question
- Serial number of the product
- Name and location of the installation site
- Name and contact information of a technically competent person who
can provide further information on the problem.
Product Returns
If the product must be returned for service, see www.vaisala.com/returns .
For contact information of Vaisala Service Centers, see
www.vaisala.com/servicecenters .