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Table 11 -- 40QN Thermistor Properties*
MINIMUM NOMINAL MAXIMUM
TEMP MINIMUM NOMINAL MAXIMUM THERMISTOR THERMISTOR THERMISTOR
(F) OHMS OHMS OHMS VOLTS -- DC VOLTS -- DC VOLTS -- DC
-40 303,300 342,700 356,200 4.80 4.82 4.84
-30 211,500 237,276 265,444 4.72 4.75 4.77
-20 149,721 166,689 185,146 4.61 4.65 4.68
-10 107,379 118,776 130,973 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
"Circuitvolts = 5 vdc.
Table 12 -- Troubleshooting
PROBLEM POTENTIAL SOURCE ACTION
Circuit breaker has tripped or fuse is blown Reset the circuitbreaker or replace the fuse.
Unit does not Power failure Restart fun coil unitoperation when power is restored.
operate
Voltage is too low Confirm the available voltage.
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 unitis obstructed Remove the obstruction.
Fan speed istoo low Change the fan speed
Change to coolingoperation or reset temperature
Operation mode is set to fan or auto. mode (using remote controller).
Air filter is blocked with dust Clean the air filter.
Insufficient Temperature is not set properly Check and reset ifnecessary.
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 offthe off timer function.
during operation Room temperature has reached the programmed set point Normal unitoperation.
*Heat pump systems only.
2)