If you are experiencing failures with the LCI-RX Reliatel heat/cool setpoints, here are a few troubleshooting steps you can try.
- LCI-RX Reliatel Precedent/Voyager II local heat/cool setpoint failures, filling up BAS alarm log
If BAS is communicating Space Temperature Setpoints to the LCI-RX and the RTRM has no local Zone Sensor Setpoint connected @ J6 terminals 2-3 and 2-5, there is a risk for possible Heat/Cool setpoint failure diagnostics being generated - If the Wired Zone Sensor has Local Setpoints available, wire them into the appropriate location on the RTRM J6 terminals
If the Wired Zone Sensor has no Local Setpoints available, see the below recommended work around or corrective action- Use the below chart to install KΩ fixed resistors on RTRM J6 to duplicate the default heat/cool setpoints
- RTRM J6, 2-3 @ 74° cooling setpoint and RTRM J6, 2-5 @ 71° heating setpoint
Zone Sensor Module Testing
Table 81. Setpoint input
| Setpoint Inputs | Read voltage at either location | |
|---|---|---|
| Cooling setpoint | RTRM J6-3 | ZSM terminal 3 |
| Heating setpoint | RTRM J6-5 | ZSM terminal 5 |
| Common | RTRM J6-2 | ZSM terminal 2 |
Problems to look for:
- Mis-wire/short/open
- Excessive resistance in circuit (*corroded or loose connection)
- Setpoint lever inaccurate (should be ± 2F of chart)
- Induced voltage (high voltage wires in same conduit)
Table 82. Setpoint inputs
| Temp °F | Resistance (K ohms) | DC Volts |
|---|---|---|
| - | open | 5.00 (open circuit) |
| 40 | 1.0841 | 2.601 |
| 41 | 1.0656 | 2.579 |
| 42 | 1.0472 | 2.557 |
| 43 | 1.0287 | 2.535 |
| 44 | 1.0102 | 2.513 |
| 45 | 0.9918 | 2.49 |
| 46 | 0.9733 | 2.466 |
| 47 | 0.9548 | 2.442 |
| 48 | 0.9363 | 2.418 |
| 49 | 0.9179 | 2.393 |
| 50 | 0.8994 | 2.368 |
| 51 | 0.8787 | 2.338 |
| 52 | 0.858 | 2.309 |
| 53 | 0.8373 | 2.278 |
| 54 | 0.8166 | 2.247 |
| 55 | 0.7958 | 2.216 |
| 56 | 0.7751 | 2.183 |
| 57 | 0.7544 | 2.15 |
| 58 | 0.7337 | 2.116 |
| 59 | 0.7142 | 2.083 |
| 60 | 0.6948 | 2.05 |
| 61 | 0.6753 | 2.015 |
| 62 | 0.6558 | 1.98 |
| 63 | 0.6363 | 1.944 |
| 64 | 0.6169 | 1.908 |
| 65 | 0.5974 | 1.87 |
| 66 | 0.5779 | 1.831 |
| 67 | 0.5584 | 1.792 |
| 68 | 0.539 | 1.751 |
| 69 | 0.5195 | 1.709 |
| 70 | 0.5 | 1.667 |
| 71 | 0.4805 | 1.623 |
| 72 | 0.461 | 1.578 |
| 73 | 0.4416 | 1.532 |
| 74 | 0.4221 | 1.484 |
| 75 | 0.4026 | 1.435 |
| 76 | 0.3832 | 1.385 |
| 77 | 0.3637 | 1.333 |
| 78 | 0.3442 | 1.28 |
| 79 | 0.3247 | 1.226 |
| 80 | 0.3053 | 1.169 |
| 81 | 0.2858 | 1.111 |
| 82 | 0.2663 | 1.051 |
| 83 | 0.2468 | 0.99 |
| 84 | 0.2273 | 0.926 |
| 85 | 0.2079 | 0.86 |
| 86 | 0.1884 | 0.793 |
| 87 | 0.1689 | 0.723 |
| 88 | 0.1495 | 0.65 |
| 89 | 0.1301 | 0.575 |
| 90 | 0.1106 | 0.498 |
| (shorted/no power) | - | 0 |
Mode Input
Terminals to Read Voltage: RTRM J6-4, J6-2
Read DC voltage with Zone Sensor Module (ZSM) attached. If voltage read does not appear to be correct, read the resistance of the circuit, then the ZSM itself, to see if a problem exists in the ZSM or the wiring. With the ZSM not attached there should be 5.00 VDC at the terminals listed above. To check for induced voltage, read AC voltage to ground from each sensor wire. Should be less than 2VAC.
Figure 69. Mode input / Voltage reading
| Mode Input: | ||
|---|---|---|
| Mode Input | RTRM J6-4 | ZSM terminal 4 |
| Common | RTRM J6-2 | ZSM terminal 2 |
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.