16
PROBLEMS
POSSIBLE CAUSES
YOU SHOULD TRY THIS
6. The
defrost cycle
does not work (the
fresh air duct is
frozen OR the fresh
air distributed is very
cold).
S
Ice deposits may be hindering the
damper operation.
S
Remove the ice.
S
The damper rod or the port damper itself
may be broken.
S
Inspect these parts and replace if necessary.
S
The damper actuator or circuit board
may be defective.
S
See Problem 2.
7. The integrated con-
trol push button does
not work.
S
The 30 - second boot sequence is not
completed.
S
See Boot Sequence.
S
The circuit board may be defective.
S
Check voltage going to circuit board J8- 1 and J8- 2.
S
The transformer may be defective
S
Check for 24 VAC on J8- 1 and J8- 2.
To prevent interior condensation on windows, do not exceed the humidity levels shown in Table 8.
Table 8 – Recommended Humidity Levels
OUTSIDE TEMPERATURE
DOUBLE- PANE WINDOWS
TRIPLE- PANE WINDOWS
50
F / 10
C
55%
65%
32
F / 0
C
45%
55%
14
F / - 10
C
35%
45%
- 4
F / - 20
C
30%
45%
- 22
F / - 30
C
25%
35%
Table 9 – Temperature/Ohm Relationship
TEMP.
(
F/ 5C)
(k Ohms)
TEMP.
(
F/ 5C)
(k Ohms)
TEMP.
(
F/ 5C)
(k Ohms)
TEMP.
(
F/ 5C)
(k Ohms)
TEMP.
(
F/ 5C)
(k Ohms)
- 58/- 50
329.5
0/- 18
61.54
55/13
15.90
112/44
5.080
167/75
1.924
- 56/- 49
310.9
1/- 17
58.68
57/14
15.28
113/45
4.911
169/76
1.869
- 54/- 48
293.5
3/- 16
55.97
59/15
14.69
114/46
4.749
171/77
1.816
- 52/- 47
277.2
5/- 15
53.41
61/16
14.12
116/47
4.593
172/78
1.765
- 51/- 46
262.0
7/- 14
50.98
63/17
13.58
118/48
4.443
174/79
1.716
- 49/- 45
247.7
9/- 13
48.68
64/18
13.06
120/49
4.299
176/80
1.668
- 47/- 44
234.3
10/- 12
46.50
66/19
12.56
122/50
4.160
178/81
1.622
- 45/- 43
221.7
12/- 11
44.43
68/20
12.09
124/51
4.026
180/82
1.577
- 44/- 42
209.9
14/- 10
42.47
70/21
11.63
126/52
3.896
181/83
1.533
- 43/- 41
198.9
16/- 9
40.57
72/22
11.20
128/53
3.771
183/84
1.492
- 40/- 40
188.5
18/- 8
38.77
73/23
10.78
129/54
3.651
185/85
1.451
- 38/- 39
178.5
19/- 7
37.06
75/24
10.38
131/55
3.536
187/86
1.412
- 36- 38
169.0
21/- 6
35.44
77/25
10.00
133/56
3.425
189/87
1.373
- 34/- 37
160.2
23/- 5
33.90
79/26
9.632
135/57
3.318
191/88
1.336
- 32/- 36
151.9
25/- 4
32.44
81/27
9.281
137/58
3.215
192/89
1.301
- 30/- 35
144.1
27/- 3
31.05
82/28
8.944
138/59
3.116
194/90
1.266
- 28/- 34
136.7
28/- 2
29.73
84/29
8.622
140/60
3.020
196/91
1.232
- 27/- 33
129.8
30/- 1
28.48
86/30
8.313
142/61
2.927
198/92
1.200
- 26/- 32
123.3
32/0
27.28
88/31
8.014
144/62
2.838
199/93
1.168
- 24/- 31
117.1
34/1
26.13
90/32
7.728
145/63
2.751
201/94
1.137
- 22/- 30
111.3
36/2
25.03
92/33
7.454
147/64
2.668
203/95
1.108
- 20/- 29
105.7
37/3
23.99
94/34
7.192
149/65
2.588
205/96
1.079
- 18/- 28
100.5
39/4
23.00
96/35
6.940
151/66
2.511
207/97
1.051
- 16/- 27
95.52
41/5
22.05
98/36
6.699
153/67
2.436
208/98
1.024
- 14/- 26
90.84
43/6
21.15
99/37
6.467
155/68
2.364
210/99
0.9984
- 12/- 25
86.43
45/7
20.30
100/38
6.245
156/69
2.295
212/100
0.9731
- 10/- 24
82.26
46/8
19.48
102/39
6.032
158/70
2.228
214/101
0.9484
- 9/- 23
78.33
48/9
18.70
104/40
5.827
160/71
2.163
216/102
0.9246
- 8/- 22
74.61
50/10
17.96
106/41
5.629
162/72
2.100
217/103
0.9014
- 6/- 21
71.10
52/11
17.24
108/42
5.438
164/73
2.039
219/104
0.8789
- 4/- 20
67.77
54/12
16.56
110/43
5.255
165/74
1.980
221/105
0.8572
- 2/- 19
64.57
Copyright 2012 Carrier Corp.
S
7310 W. Morris St.
S
Indianapolis, IN 46231
Edition Date: 11/12
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: IM- HRVLHB- 01
Replaces:NEW
