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Individual function check items
If Lossnay does not work in the trial operation after installation is completed, or if Lossnay works abnormally
during use, check the following items.
No.
Problem
1 The fan does not
operate even
though the trial
operation switch
(SW2-1) on the cir-
cuit board is turned
ON.
2 Though the remote
controller display
indicates the fan
is running, the fan
stops by itself.
3 The fan does not
stop even though
the remote control-
ler is operated to
stop operation.
Factor
The connectors between the fan
motor and circuit board is discon-
nected.
The connector between the con-
trol circuit board and power circuit
board is disconnected.
The temperature around the prod-
uct is high.
Fan motor failure
Circuit board failure
The Lossnay unit is operating in
the protective mode (intermittent
operation).
The Lossnay unit is set to the
delay operation.
The temperature around the prod-
uct is high.
The after-heater is set to be used. If the after-heater is set to be used, the fan con-
Check the connector (CN9) for the exhaust fan
motor and the connector (CN10) for the supply
fan motor.
Check the connector connections
(CN18-CN118 and CN19-CN119).
Use the product at a temperature of 40°C or
lower.
Check the resistance between the motor leads.
(See chapter 8. (8) Motor resistance table (page 28).)
If the measured value is significantly different
from the values specified in the table, replace
the fan motor.
Disconnect the connectors (CN9 and CN10),
and check the output voltage of each pin of the
connectors within one minute after turning the
switch (SW2-1) ON. (One minute later, the error
will occur.)
(See chapter 7. (2) Power circuit board (page 11).)
If the voltage value is abnormal, replace the
circuit board.
If the problem persists, replace the fan motor.
When PZ-61DR-E is used, it displays the icon
" " that indicates the protective operation is in-
progress. For details, see the remote controller
manual.
When PZ-61DR-E is used, it displays the icon
" " that indicates the delay operation is in-
progress.
LED1 (green) on the control circuit board lights.
Lossnay operates in 30 minutes (or 15 minutes)
after the external signal is input to run.
Check the function selection switch (SW5-1) on
the circuit board or the function setting (No. 9) of
PZ-61DR-E. (See the Lossnay technical manual.)
When the ambient temperature of the product
is high (higher than 40°C), the fan may stop to
prevent the fan motor from overheating.
tinues operating for three minutes after the stop
operation.
Check the function selection switches (SW2-8
and 5-2) on the circuit board or the function set-
tings (No. 57 and 58) of PZ-61DR-E. (See the
Lossnay technical manual.)
─ 18 ─
Corrective action
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