Table 11 -- 40QN Thermistor Properties*
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| MINIMUM | NOMINAL | MAXIMUM |
TEMP | MINIMUM | NOMINAL | MAXIMUM | THERMISTOR | THERMISTOR | THERMISTOR |
(F) | OHMS | OHMS | OHMS | VOLTS | VOLTS | VOLTS |
303,300 | 342,700 | 356,200 | 4.80 | 4.82 | 4.84 | |
211,500 | 237,276 | 265,444 | 4.72 | 4.75 | 4.77 | |
149,721 | 166,689 | 185,146 | 4.61 | 4.65 | 4.68 | |
107,379 | 118,776 | 130,973 | 4.48 | 4.52 | 4.55 | |
0 | 77,281 | 85,677 | 93,867 | 4.30 | 4.35 | 4.40 |
10 | 56,567 | 62,617 | 65,205 | 4.09 | 4.16 | 4.21 |
20 | 42,661 | 46,302 | 50,129 | 3.86 | 3.92 | 3.98 |
39 | 32,043 | 34,580 | 37,220 | 3.59 | 3.66 | 3.72 |
32 | 30,300 | 32,550 | 35,120 | 3.53 | 3.60 | 3.66 |
49 | 24,061 | 26,118 | 27,960 | 3.28 | 3.36 | 3.43 |
50 | 18,650 | 19,900 | 21,180 | 2.99 | 3.05 | 3.11 |
60 | 14,402 | 15,312 | 16,219 | 2.67 | 2.73 | 2.79 |
70 | 11,247 | 11,883 | 12,518 | 2,36 | 2.42 | 2.47 |
80 | 8,820 | 9,299 | 9,779 | 2.06 | 2.11 | 2.16 |
90 | 6,846 | 7,339 | 7,754 | 1.76 | 1.83 | 1.58 |
100 | 5,487 | 5,529 | 6,187 | 1,52 | 1,57 | 1.63 |
110 | 4,367 | 4,667 | 4,976 | 1.29 | 1.34 | 1,40 |
120 | 3,502 | 3,760 | 4,026 | 1.09 | 1.14 | 1,19 |
130 | 2,830 | 3,051 | 3,281 | 0.92 | 0.97 | 1,02 |
140 | 2,300 | 2,489 | 2,687 | 0.77 | 0.82 | 0,87 |
150 | 1,880 | 2,045 | 2,216 | 0.65 | 0.69 | 0.74 |
160 | 1,547 | 1,688 | 1,836 | 0.55 | 0.59 | 0.63 |
170 | 1,280 | 1,402 | 1,531 | 0.46 | 0,50 | 0.53 |
180 | 1,065 | 1,170 | 1,282 | 0.39 | 0.42 | 0.45 |
190 | 690 | 982 | 1,078 | 0.33 | 0.36 | 0.39 |
299 | 748 | 828 | 913 | 0.28 | 0.31 | 0.33 |
210 | 631 | 701 | 766 | 0.24 | 0.26 | 0.28 |
212 | 611 | 678 | 751 | 0.23 | 0.25 | 0.28 |
"Circuit volts = 5 vdc.
Table 12 -- Troubleshooting
PROBLEM | POTENTIAL | SOURCE | ACTION |
| Circuit breaker has tripped or fuse is blown | Reset the circuit breaker or replace the fuse. | |
Unit does not | Power failure |
| Restart fun coil unit operation when power is restored. |
operate | Voltage is too low |
| Confirm the available voltage. |
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| ||
| Air filter is blocked with dust |
| Clean the air filter. |
| Temperature is not set properly | Check and reset if necessary. | |
Insufficient | Window(s) and/or door(s) are open | Close window(s) and door(s). | |
Cooling | Outdoor unit is obstructed |
| Remove the obstruction. |
| Fan speed is too low |
| Change the fan speed |
| Operation mode is set to fan | or auto. mode | Change to cooling operation or reset temperature |
| (using remote controller). | ||
| Air filter is blocked with dust |
| Clean the air filter. |
Insufficient | Temperature is not set properly | Check and reset if necessary. | |
Heating* | Window(s) and/or door(s) are open | Close window(s) and door(s). | |
| Outdoor unit is obstnJcted |
| Remove the obstruction. |
Unit stops | Off timer is operating |
| Turn off the off timer function. |
during operation | Room temperature has reached the programmed set point | Normal unit operation. |
*Heat pump systems only.
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