Mitsubishi Electric M Series Service Manual page 22

• Table 3 shows how the time delay is selected
Table. 3 [Time Delay Selection Table]
Request Code *1 Action *3
390 Monitor Time Delay Setting
391 Set Time Delay to 14 minutes
392 Set Time Delay to 19 minutes
Set Time Delay to 24 minutes *2
393
394 Set Time Delay to 29 minutes
*1 Time delay can only be selected with MA controller. If use of a non-MA controller is desired, the time delay must first be
selected with the MA controller. Then the non-MA controller can be attached and used.
*2 The default time delay setting is 24 minutes.
*3 All delay times are approximate.
• Chart 1 and Table 4 show an example of heater operation.
Chart 1 [Heater Operation Example]
T
o
T - 0.9 °F [0.5 °C]
o
T - 2.7 °F [1.5 °C]
o
X min
ON
EH1
OFF
ON
EH2
5 °
OFF
Table. 4 [Heater Operation Example]
Step
(To -T RA ) > 2.7 °F [1.5 °C]
(To -T RA ) < 2.7 °F [1.5 °C]
(To -T RA ) < 0.9 °F [0.5°C]
(To -T RA ) > 2.7 °F [1.5 °C]
(To -T RA ) > 2.7 °F [1.5 °C]
(To -T ) < 0.9 °F [0.5°C]
RA
X min
Condition
AND T RA has not increased by 0.9 °F [0.5°C] in X min
AND T RA increasing faster than 0.9 °F [0.5°C] in 7 min
AND T RA has not increased by 0.9 °F [0.5°C] in X min
AND T RA not increasing faster than 0.9 °F [0.5°C] in 7 min
20
> 7
X min
min
Result
EH1 ON
EH2 not ON
EH1 OFF
EH1 ON
EH2 ON
EH1 OFF
EH2 OFF
© 2016 Mitsubishi Electric US, Inc.
T
RA