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6.2.2 Thermostat Errors
No.
Error Message
1
THERMO UNIT ROM
ERROR
2
THERMO UNIT RAM
ERROR
3
THERMO UNIT
PARAMETER ERROR
4
THERMO UNIT TIME
OUT ERROR
5
THERMO UNIT
POWER ON ERROR
6
ABNORMAL
TEMPERATURE
(THERMO UNIT)
7
ABNORMAL
TEMPERATURE
(PELTIER)
8
START KEY IS NOT
ACCEPTABLE
THERMO UNIT IS
NOT CONTROLLED
Table 6-3 Thermostat Errors
Possible Cause
PC board malfunctions.
Communication is
abnormal.
Power supply of the
thermostat is abnormal.
1. Temperature sensor is
abnormal.
2. PC board is abnormal.
This message (warning
message) is indicated if
START key input cannot be
accepted after recovery
from an error.
6 - 7
Remedy
Turn on power supply again.
If the same error is indicated
again, contact your nearest
service office of Hitachi High-
Technologies Corporation sales
representative.
Turn on power supply again.
If the same error is indicated
again, contact your nearest
service office of Hitachi High-
Technologies Corporation sales
representative.
Turn on power supply again.
If the same error is indicated
again, contact your nearest
service office of Hitachi High-
Technologies Corporation sales
representative.
Turn on power supply again. If the
same error is indicated again,
contact your nearest service office
of Hitachi High-Technologies
Corporation sales representative.
Clear the message.
6.2.2
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